30 girls and boys are planned for a picnic. They are in a ratio of 1 girl to 5 boys. How many boys are there?
b boys
so b/5 girls
b + b/5 = 30
5 b + b = 30*5
6 b = 30*5
b = 5*5 = 25
so b/5 girls
b + b/5 = 30
5 b + b = 30*5
6 b = 30*5
b = 5*5 = 25