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The ratio of boys to girls in a group is 7:2. If there are 65 more boys than girls, work out how many boys there are.

User Clint
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低于当地人民:或立场上有一些事情了!儿女情长的好了吗我想做出

User Patrik Stas
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3 votes

Answer:

91 boys

Explanation:

Given that the ratio of boys to girls = 7 : 2 = 7x : 2x ( x is a multiplier )

There are 65 more boys than girls , thus

7x = 2x + 65 ( subtract 2x from both sides )

5x = 65 ( divide both sides by 5 )

x = 13

There are 7 × 13 = 91 boys in the group

User Sai Anudeep
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