Question

A jar black beans and pinto beans in a ratio of 1 : 4, and 180 of the beans are black beans. How many beans in total are there in the jar?

Answer 1

720 beans in total

Explanation:

I would set this up with proportions, so-

1 180

4 x

Then cross multiply-

4 x 180 = 720

Divide-

720/1 = 720

720 is your answer