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Question 5 (nov.14th)

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Question 5 (nov.14th)

by bacali » Fri Nov 14, 2008 1:11 pm
The ratio of the number of boys to the number of girls in a certain school club is 3 : 4. If there are 5 more girls than boys in the club, how many girls are in the club?


A. 7
B. 8
C. 12
D. 15
E. 20


Not my day today, can't seem to setup the equations right. Please help.
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by EricLien9122 » Fri Nov 14, 2008 1:14 pm
B: 3
G: 4

(3x+5)/4x=1

x=5

5(4)=20

The trick is adding 5 to the boys in order to maintain a 1 to 1 ratio.

I hope this makes sense, please correct me if I made a mistake.
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by bacali » Fri Nov 14, 2008 8:56 pm
OA: E

Thanks
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