5/7 students are boys. There are 18 more boys than girls. How many altogther in the group?
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hala718
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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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