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Crazy, logical algebraic GCSE Problem????

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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
Reply 21
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Little Isis
OP
7
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?
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
Reply 23
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Little Isis
OP
7
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????
Reply 24
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Music99
4
Original post by Little Isis
7X100=700p

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


Yep :smile:.
Reply 25
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Little Isis
OP
7
Original post by Music99
Yep :smile:.



Which one should i use? P100 or 100p? I'm thinking P100
Reply 26
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joostan
13
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 :smile:
Reply 27
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Little Isis
OP
7
Original post by joostan
Either or, Though the second one needs to be 100P :smile:


Cool thanks. Now all i have to do is figure out Q.2:dontknow:
Reply 28
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joostan
13
Original post by Little Isis
Cool thanks. Now all i have to do is figure out Q.2:dontknow:


Hint:

Spoiler

Reply 29
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Little Isis
OP
7
Original post by joostan
Hint:

Spoiler



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
Reply 30
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joostan
13
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


How about:
 25(50−x)+15x=850\ 25(50 -x) + 15x = 850 Do you see what I did here? :smile:
Reply 31
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Little Isis
OP
7
Original post by joostan
How about:
 25(50−x)+15x=850\ 25(50 -x) + 15x = 850 Do you see what I did here? :smile:


Yeah i get it, so this will give me;

1250-25x+15x=850

Would something else need to be done to this equation now?
Reply 32
Avatar for Aurarius
Aurarius
2
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:smile:
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
Reply 33
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joostan
13
Original post by Aurarius
.


For future reference full solutions should only be provided if absolutely necessary. :smile:
See forum rules
Perhaps a spoiler so the OP can try for themselves :smile:
Reply 34
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Aurarius
2
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?
Reply 35
Avatar for joostan
joostan
13
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. :smile:
Original post by Little Isis
7X100=700p

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


YES :smile:

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