# Question 36ac7

Jul 29, 2017

~~42.9%

#### Explanation:

If the ratio of boys : girls is $3 : 4$, it means that the total number of 'parts' is $7$.

The number of boys is $\frac{3}{7}$ of the total.

Writing a fraction as a percentage is found by multiplying by 100%

3/7 xx 100%

= 42.857%

~~42.9%