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 By: manhan (offline)  Wednesday, July 04 2012 @ 12:49 AM CDT (Read 1185 times)
manhan

Q1) 4 girls share 2 identical butter cakes equally.
5 boys share 4 identical butter cakes equally.
What is the difference between each boy's and each girl's share?

1) 1/5
2) 1/4
3) 3/10
4) 1/2

I keep getting 1.1/2

Q2) At first Alvin had twice as many trading cards as Steven. After Alvin had given away 285 of his trading cards, Steven had twice as many trading cards as Alvin. How many trading cards did they have altogether at first?

Answer given: 845. But I got 570

Would appreciate any help here. Thank You.

Newbie

Registered: 12/31/06
Posts: 5

 By: echeewh (offline)  Wednesday, July 04 2012 @ 05:37 AM CDT
echeewh

Q1.

each G's share: 2/4
each B's share: 4/5

Difference: 4/5 - 2/4 = 6/20 = 3/10

Q2.

Your answer of 570 is correct. You can actually put this number back into the question and find that it makes sense.

==================================

Do let me know again if Q1 does not agree with your answerkey.

Cheers,
Edward

Active Member

Registered: 04/21/11
Posts: 627

 By: manhan (offline)  Wednesday, July 04 2012 @ 09:50 PM CDT
manhan

Thank you Edward

I have realised my mistake in q1. Have changed Girls 1 whole into 5 parts, thus 2.5 for 1 girl. And 4 for1 boy thus diff = 1.5 . Should have left them in fraction. cheers!

Newbie

Registered: 12/31/06
Posts: 5

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