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# Speed Distance Time for Dummies

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1. Re: Speed Distance Time for Dummies
You really need to be able to work that sort of question out for yourself. I'll at least tell you that the key is the difference between 34 and 51.
2. Re: Speed Distance Time for Dummies
I do have the correct answer but I used a calculator, from there I figured a way out without using a calculator but I need to know it will always work thats why Im asking for a proven method.

The difference between the 2 is 17. 17 is also half of 34 so when you multiply 17 by 3 you get 51 which means the answer is 1 hour and 30 mins.
3. Re: Speed Distance Time for Dummies
I do have the correct answer but I used a calculator, from there I figured a way out without using a calculator but I need to know it will always work thats why Im asking for a proven method.

The difference between the 2 is 17. 17 is also half of 34 so when you multiply 17 by 3 you get 51 which means the answer is 1 hour and 30 mins.
Good work figuring out your methodology. With practice you'll become more confident with moving the formula around to calculate speed, distance or time as well as noticing key numbers or the relationships between different numbers.
Have you read the first page of this thread? It's pretty comprehensive.
Also you really ought to be able to work that kind of thing out without a calculator, give it some practice
4. Re: Speed Distance Time for Dummies
Hi everyone,

I'm due to attempt an aptitude test for selection for pilot training after over 12 years in the infantry. My test is on 24 Apr and I'm really struggling with DST. Been reading through all the different formulas in this forum but I'm still having huge difficulties answering the different question papers on http://www.speeddistancetime.info/answers.php.

Can someone please show me how to work out the following question

At 135 mph, how long does it take to travel 36 miles?

I hope someone can help. If so I'll probably be asking about another hundred questions after this one haha.

Chris
5. Re: Speed Distance Time for Dummies
(Original post by 1CGHunter)

At 135 mph, how long does it take to travel 36 miles?
135mph is 2.25 miles in one minute.

36/2.25 = 16 minutes

Common sense check - there are about 4 36s in 135, ie a quarter.
6. Re: Speed Distance Time for Dummies
(Original post by 1CGHunter)
Hi everyone,

I'm due to attempt an aptitude test for selection for pilot training after over 12 years in the infantry. My test is on 24 Apr and I'm really struggling with DST. Been reading through all the different formulas in this forum but I'm still having huge difficulties answering the different question papers on http://www.speeddistancetime.info/answers.php.

Can someone please show me how to work out the following question

At 135 mph, how long does it take to travel 36 miles?

I hope someone can help. If so I'll probably be asking about another hundred questions after this one haha.

Chris
3PD is right and the way I would do it. Another way could be

36/135 = 12/45

From the front page there are 1 and a third lots of 45 in an hour.

Multiply 12 by 1 and a third and get 16 minutes.

Easiest way to do it is break it into periods of an hour. Just practice it's easy becomes second nature. And that's the easy part of the testing haha.
7. Re: Speed Distance Time for Dummies
(Original post by eyes on)
4 hours 20 mins as a fraction of one hour is 13/3

So 52 divided by 13 and then times by 3 = 12 mph

**As soon as you see 20 mins - recognise that the fraction will be in thirds.

Likewise:
30 mins will be in halves
15 & 45 mins will be in quarters
12, 24, 36 & 48 mins will be in fifths
10 & 50 mins will be in sixths

They are the most common, but you get my point?

I can get the majority of S,D,T Qs but

What speed covers 208mile in 1hr 36mins
What speed covers 56mile in 1hr 36mins
what speed covers 32mile 6hrs 24mins
What speed covers 96mile in 5hrs 20mins

the is something recurring here...
Any help would be great!?
8. Re: Speed Distance Time for Dummies
(Original post by its_me!)
I can get the majority of S,D,T Qs but

What speed covers 208mile in 1hr 36mins
What speed covers 56mile in 1hr 36mins
what speed covers 32mile 6hrs 24mins
What speed covers 96mile in 5hrs 20mins

the is something recurring here...
Any help would be great!?
Turn the time figure from hours and minutes into a minutes figure.

Then if you do x miles in y minutes, you should be able to calculate by proportions how many miles you'd travel in 60 minutes.
9. Re: Speed Distance Time for Dummies
Apologies for posting in an old thread, however...

I was wondering if anyone knows what kind of speed you're expected to calculate SDT questions during the aptitude test?

I ask, due to finally being able to answer all SDT questions (well, almost!) on this website (www.speeddistancetime.info), but I can't seem to get my average time below around 30 seconds per question due to there always being a couple questions with unusual numbers which require a bit more effort from the old brain!

Or am I just fretting over nothing? As I have heard that the numbers used in the actual aptitude test are easier than the examples given on the before mentioned website.

Thanks

Edit:

An example of what I would class as a time consuming questions is this: At 15 mph, how far do you travel in 28 hours and 20 mins?

Will they really ask questions like this? As although I can answer the question (425 miles), it takes a while!
Last edited by AirPower; 13-09-2012 at 10:48.
10. Re: Speed Distance Time for Dummies
Just thought I'd answer my own question above...

Yes, the SDT questions are a lot harder than the ones mentioned in this thread (or they may have just seemed difficult due to that section being near the end of the test!) - and time wise you get around 17 minutes to answer 17 questions, I think, all a bit of a blur now I've actually passed!
11. Re: Speed Distance Time for Dummies
Hey, is the layout of the test multiple choice, or do you have to work out the answer and then put it into a blank space?
12. Re: Speed Distance Time for Dummies
Was reading through this test and realised that my AFCO literally gave me the first post printed word for word as practice.
13. Re: Speed Distance Time for Dummies
AFCO's giving out my old thread. The irony hurts.

I'm in the RAF recruiting brochures, I'm flying aircraft on their websites, and yet I don't have a job with them.

And here I am, about to use my own thread once again for an interview with British Airways. Amazing how things turn out sometimes.

Big hello to anyone who remembers me, it's been a while!
Last edited by Q_M; 3 weeks ago at 16:12.
14. Speed Distance Time for Dummies
That is really helpful but the question I'm trying to figure out isn't in hours to minutes it's seconds the question is what is the speed of the object if it has travelled 7m in 2 seconds
15. Re: Speed Distance Time for Dummies
World's longest post.
16. Re: Speed Distance Time for Dummies
I don't get your first example. You go to all the trouble of breaking down 60 minutes into smaller parts and yet you give a so long-winded solution.

All you would have needed is 5 lots of 30 minutes in 2.5 hours so in 1 lot of 30 minutes you travel 15/5 = 3. Then there are 2 lots of 30 minutes in an hour so 2*3=6 miles an hour is the speed. Why would you divide by 150 and do it per minute as when you can use easier numbers and use 30 minutes as base?
17. Re: Speed Distance Time for Dummies
(Original post by danny111)
I don't get your first example. You go to all the trouble of breaking down 60 minutes into smaller parts and yet you give a so long-winded solution.

All you would have needed is 5 lots of 30 minutes in 2.5 hours so in 1 lot of 30 minutes you travel 15/5 = 3. Then there are 2 lots of 30 minutes in an hour so 2*3=6 miles an hour is the speed. Why would you divide by 150 and do it per minute as when you can use easier numbers and use 30 minutes as base?
Could you help me with this question what is the speed of something that travels 7m in 2 seconds how do I figure that out please
18. Re: Speed Distance Time for Dummies
(Original post by Tomlyte)
Could you help me with this question what is the speed of something that travels 7m in 2 seconds how do I figure that out please
Well I would say 3.5m/s but if you need it in km/h just times by 30*60/1000 (first is to get it per minute second is to get it per hour the last is to get it to km from m) so 7*30*60/1000 gives 12.6 km/h
19. Re: Speed Distance Time for Dummies
(Original post by danny111)
I don't get your first example. You go to all the trouble of breaking down 60 minutes into smaller parts and yet you give a so long-winded solution.

All you would have needed is 5 lots of 30 minutes in 2.5 hours so in 1 lot of 30 minutes you travel 15/5 = 3. Then there are 2 lots of 30 minutes in an hour so 2*3=6 miles an hour is the speed. Why would you divide by 150 and do it per minute as when you can use easier numbers and use 30 minutes as base?
Danny,

Looking back now I agree the first post is aggressively average. It was never intended to be a sticky on a forum and I could never have imagined it would get 143, 500 views.

When I'm past this interview phase next week I will try and find the time to come back and edit some of the errors within the post.

Q_M
20. Speed Distance Time for Dummies
T = D/S
T = 30/225

Find the easiest common factor, which is 5.

divide them both by 5, giving ...

6/45

The common factor of these two is 3...

2/15...

15 goes into 60 ...4 times...

2 x 4 = 8 minutes.

I've found simplifying fractions down until the denominator will divide into 60 then multiplying by the numerator.

Hope this helps.

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Last updated: November 19, 2013
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