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# Crazy, logical algebraic GCSE Problem???? Watch

1. (Original post by Little Isis)
Ahhh, much more understandable. so the answer should be in pounds £P+5x and in pence P+500x?
Almost

What will this be in pence
2. (Original post by TenOfThem)
Almost

What will this be in pence
I have no idea how i would convert P into pence, how is that possible?
3. (Original post by Little Isis)
I have no idea how i would convert P into pence, how is that possible?
of course you do

Always relate to a number situation

How would you change £7 into pence
4. (Original post by TenOfThem)
of course you do

Always relate to a number situation

How would you change £7 into pence
7X100=700p

So its PX100= P100 or 100p????
5. (Original post by Little Isis)
7X100=700p

So its PX100= P100 or 100p????
Yep .
6. (Original post by Music99)
Yep .

Which one should i use? P100 or 100p? I'm thinking P100
7. (Original post by Little Isis)
Which one should i use? P100 or 100p? I'm thinking P100
Either or, Though the second one needs to be 100P
8. (Original post by joostan)
Either or, Though the second one needs to be 100P
Cool thanks. Now all i have to do is figure out Q.2
9. (Original post by Little Isis)
Cool thanks. Now all i have to do is figure out Q.2
Hint:
Spoiler:
Show
Number of oranges = x
So number of lemons = 50 - x
10. (Original post by joostan)
Hint:
Spoiler:
Show
Number of oranges = x
So number of lemons = 50 - x
Would it be something along the lines of:

50-x=y

850/x

850/y

or x+y=50
50-x=y

850/x

850/y
11. (Original post by Little Isis)
Would it be something along the lines of:

50-x=y

850/x

850/y

or x+y=50
50-x=y

850/x

850/y
Do you see what I did here?
12. (Original post by joostan)
Do you see what I did here?
Yeah i get it, so this will give me;

1250-25x+15x=850

Would something else need to be done to this equation now?
13. I'm assuming you want a direct solution so here goes:

1) a.
The basic cost is £P. Then x pence is added per mile driven. x pence is
£(x/100). So the total cost in pounds is £P+(x/100).

b.
You can convert the previous answer by multiplying by 100 to get:
100P+x pence

2) a.
The shopper buys 50 fruit. x are oranges. Logically speaking, the lemons must be what is left over from 50 after x orange so the number of lemons would be 50-x

b.
Since lemons cost 25 pence you simply multiply the number of lemons by 25 pence/lemon which gets you 1250-25x pence {just 25(50-x) works too - its easier to use for mental arithmetic and is simplified}

c. The shopper has bought x oranges at 15 pence each so the total cost is 15x pence.

(The last two answers can be converted to punds as well)

d.
x*orange's cost + (50-x)*lemon's cost = 850 (I converted it to pence for simplicity)
This simplifies to:
15x + 25(50-x) = 850 (Keep going from here
15x + 1250 - 25x = 850
15x - 25x = 850 - 1250
-10x = -400
x = 40

You wrote find the cost of the lemons but thats already given as 25 pence. I'm assuming you meant number of lemons so:

Since x is the number of oranges and 50-x the number of lemons, the shopper bought 40 oranges and 10 lemons. {50-40=10}

Hope this helped
14. (Original post by Aurarius)
.
For future reference full solutions should only be provided if absolutely necessary.
See forum rules
Perhaps a spoiler so the OP can try for themselves
15. Oh sorry about that, I'm new and everything. I tried to walk through all the steps so it wasn't just the answers. Is it possible to add a spoiler tag?
16. (Original post by Aurarius)
Oh sorry about that, I'm new and everything. I tried to walk through all the steps so it wasn't just the answers. Is it possible to add a spoiler tag?
Hit edit then go advanced. Highlight the text and click on the thing next to the you tube link.
Alternatively just type [spoiler] [/spoiler
Close the square bracket on the other side and a spoiler will appear.
17. (Original post by Little Isis)
7X100=700p

So its PX100= P100 or 100p????
YES

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