You are Here: Home >< Maths

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016
2. Billie = Alice x 2

Billie = 2/3 x chris, rearrange

Chris = 4/5 x age, rearrange
3. (Original post by Vikingninja)
Billie = Alice x 2

Billie = 2/3 x chris, rearrange

Chris = 4/5 x age, rearrange
I don't know the amount for Chris
4. (Original post by zXcodeXz)
I don't know the amount for Chris
You know what Billie has, rearrange the equation I gave to find Chris. Sorry just don't want to hand over the entire thing.
5. (Original post by Vikingninja)
You know what Billie has, rearrange the equation I gave to find Chris. Sorry just don't want to hand over the entire thing.
You might as well tell me please I'm really stupid
6. (Original post by zXcodeXz)
You might as well tell me please I'm really stupid
Billie has 8. 8 = 2/3 x chris. Divide 8 by 2/3 so Chris is the subject.
7. (Original post by Vikingninja)
Billie has 8. 8 = 2/3 x chris. Divide 8 by 2/3 so Chris is the subject.
So is it 1.3 reoccurring?
8. (Original post by zXcodeXz)
So is it 1.3 reoccurring?
No it's 12. Dividing by 2/3 is the same as multiplying by 3/2.
9. (Original post by Vikingninja)
No it's 12. Dividing by 2/3 is the same as multiplying by 3/2.
Oh yes sorry, is that it?
10. (Original post by zXcodeXz)
Oh yes sorry, is that it?
What do you mean?
11. (Original post by Vikingninja)
What do you mean?
Is that the answer or do I do 12x4/5 ?
12. (Original post by zXcodeXz)
Is that the answer or do I do 12x4/5 ?
12 = 4/5 x age. So it's the same procedure as the last step.
13. (Original post by Vikingninja)
12 = 4/5 x age. So it's the same procedure as the last step.
Ok so that is 9.60 is that the amount of money he has right?
14. (Original post by zXcodeXz)
Ok so that is 9.60 is that the amount of money he has right?
No it should become larger. It's 12 divided by 4/5 which is multiplying by 5/4.
15. (Original post by Vikingninja)
No it should become larger. It's 12 divided by 4/5 which is multiplying by 5/4.
Oh ok so it's 15?
16. (Original post by zXcodeXz)
Oh ok so it's 15?
Yep.
17. (Original post by Vikingninja)
Yep.
Thanks so much, how do you know what to do in these type of questions?
18. (Original post by zXcodeXz)
Thanks so much, how do you know what to do in these type of questions?
Try and convert the words into mathematical equations, assign variables, form equations, etc...

Moving this to maths btw.
19. (Original post by zXcodeXz)
Thanks so much, how do you know what to do in these type of questions?
I create equations from what information the question gives. I then rearrange the equations to find each thing that I need to get to the answer. e.g with Billie = 2/3 x chris and I need to find Chris I multiply both sides by 3/2.
20. (Original post by Zacken)
Try and convert the words into mathematical equations, assign variables, form equations, etc...

Moving this to maths btw.
Oh ok, sorry about posting in wrong forum

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: April 12, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams