Answer:
The ratio of black shirts to blue shirts is 7:2
Explanation:
Ratios
A ratio is a way to compare two numbers of the same kind. We use ratios to compare things of the same type. For example the ratio of boys and girls in a class. Ratios as expressed in the form n:m.
There are 36 red shirts, 12 blue shirts, 42 black shirts, and 60 white shirts. It's required to calculate the ratio of black shirts to blue shirts. We'll use fractions to express the relationship. The fraction will divide 42 by 12:
![(42)/(12)](https://img.qammunity.org/2022/formulas/mathematics/high-school/a2fwq8x6d1b3g3gnovvq2sfmhk59ulyb7b.png)
Simplifying by 6:
![(42)/(12)=(7)/(2)](https://img.qammunity.org/2022/formulas/mathematics/high-school/8w0ocmebi3q0wc3vk1sgme1628gfm0vl0a.png)
Thus, the ratio of black shirts to blue shirts is 7:2