SOLUTION: The ratio of the number of boys to the number of girls in a club was 9:8.
1/2 of the number of girls left the club and there were 15 more boys than girls.
a. How many children we
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Question 541213: The ratio of the number of boys to the number of girls in a club was 9:8.
1/2 of the number of girls left the club and there were 15 more boys than girls.
a. How many children were in the club at first?
b. How many girls left the club?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The ratio of the number of boys to the number of girls in a club was 9:8.
Let # of girls be 9x
Then # of boys is 8x
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1/2 of the number of girls left the club and there were 15 more boys than girls.
Equation:
8x = (1/2)9x + 15
8x = 4.5x + 15
3.5x = 15
x = 15/3.5
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a. How many children were in the club at first?
9x+8x = 17x = 73 when rounded up
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b. How many girls left the club?
4.5x = 20 when rounded up
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Cheers,
Stan H.
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