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 By: geniuskids (offline)  Monday, April 29 2013 @ 11:18 AM CDT (Read 1038 times)
geniuskids

Hi there, pls help:-

(Q30) Joe, Kate and Harry scored a total of 618 marks in a test.
Kate scored 10% more than Joe while Harry scored 10% less than Kate.
How many more marks did Joe score than Harry?

Answer from answer sheet is 2

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Registered: 11/12/11
Posts: 169

 By: echeewh (offline)  Monday, April 29 2013 @ 04:55 PM CDT
echeewh

Hey there,

Following pls find my worked solution:

Q30

K: 110%
J: 100%
H: 90% × 110 = 99%

110% + 100% + 99% = 618
309% = 618
J - H = 100% - 99% = 1%
1% = 618 ÷ 309 = 2

=========

Trust this helps.

Do let me know again if theres further clarification.

Cheers,
Edward

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Registered: 04/21/11
Posts: 627

 By: geniuskids (offline)  Tuesday, April 30 2013 @ 09:18 AM CDT
geniuskids

Thanks Edward, you made it sound so simple.

Million thanks

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Registered: 11/12/11
Posts: 169

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