are adults so are children.3) 30% of the people in a restaurant are adults while the rest are children. Three-fifths of the adults are men and 3/7 of the children are boys. There are 112 more girls than women. How many people are there in the restaurant?
of the children are boys, so of the group is boys.
That means that: of the group are girls (because all the children that aren't boys are girls.... hopefully)
Anyway, of the adults are men, so then of the group are men.
That means that of the group are women.
So we know that ( stands for the number of people in the group):
divide both sides by to get: