5/7 students are boys. There are 18 more boys than girls. How many altogther in the group?

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hala718 eNotes educator | Certified Educator

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Let the number of boys be B and the number of girls be G.

There are 18 more boys than girls.

Then, B = G + 18 ...............(1)

Also, given that 5/7 of the students are boys.

==> (5/7)* (B+G) = B............(2)

We will substitute (1) into (2).

==> (5/7) * (G+18 + G) = G+18

==> (5/7)...

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