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 ratio
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By: lisatang (offline)  Wednesday, September 19 2012 @ 01:26 AM CDT (Read 717 times)  
lisatang

Pls assist

1) Last year, the ratio of the number of female members to the number of male members in a club was 8 : 5.
This year, 48 female members joined the club.
As a result, the ratio became 8 : 3. How many members were there in the club last year?

2) A sum of $920 is to be devided among a number of adults and children. Each adult receives $boy receive $5
and each girl receives $4. Given that the ratio of adults to boys to girls is 3 : 4 :2, how many more boys than girls are there?

Thanks



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By: GIM (offline)  Wednesday, September 19 2012 @ 11:08 AM CDT  
GIM

Q1
Since the males remained the same, change units for male to the same number.

Last year,
8 x 5 : 3 x 5
40 : 15

This year,
8 x 3 : 5 x 3
24 : 15

Difference in female, will be
(40 - 24)units ----------> 48
16 units -----------------> 48
1 unit --------------------> 48 รท 16 = 3
Last year ---------------> (24 + 15)units x 3 = 117members

Q2
I believe the amount each adult gets is missing. Need that info to solve.

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