The ratio of boys to girls in a class is 3:5. If there are 36 girls, how many boys are there in the class?
a) 20
b) 15
c) 22 – Answer
d) 27
Solution:
Let the number of boys be 3x. Number of girls = 5x
According to the problem, 5x = 36.
x = 36 / 5
x = 7.2
Number of boys = 3 * 7.2 = 21.6 (approximated to the nearest whole number)
There are approximately 22 boys in the class.
Therefore, the correct answer is Option C.