1:3 is the ratio to boys and girls. I know that 1/4 must be girls. 3/4 will be boys.
Divide 236 by 4.
236/4= 59
Multiply that by 3.
59*3= 177
177 of the students are boys.
I hope this helps!
~kaikers
First, 150-45 because we already know he had 45 dollars so we are left with 105$ so next you do 105$ divided by 7$ which gives you 15 hours. The answer is 15 hrs :)
