
By: manhan (offline) Wednesday, July 04 2012 @ 12:49 AM CDT (Read 1040 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: 625





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



