SOLUTION: The ratio of boys to girls in a class is 3:1. There are 36 students in the class. How many more boys than girls are there?

Question 1140127: The ratio of boys to girls in a class is 3:1. There are 36 students in the class. How many more boys than girls are there?

Found 2 solutions by ikleyn, Boreal:
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.

x girls; 3x boys. x + 3x = 36 4x = 36 x = 36/4 = 9. It is the number of girls. 3x = 3*9 = 27. It is the number of boys. 27 - 9 = 18. It is your answer.

Solved.

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
3:1 is ratio
3x:1x is same ratio
total number is 4x and 4x=36 x=9
27:9 or 18 more boys than girls.
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