3 years ago

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.

Mathematics

2 answers:

kicyunya [14]3 years ago

6 0

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

valentina_108 [34]3 years ago

4 0

Answer:

91 boys

Step-by-step 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

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