Question

One batch of pink paint uses 2 cups of red paint and 7 cups of white paint. Mai made a large batch of pink paint using 21 cups of white paint. How many cups of red paint did she use?

Answer 1

3

Explanation:

because 1 pink batch uses 2 cups of red paint =1+2 =3

and 7 cups of whit paints

and we know that she used a large batch of pink paint using 21 cups of white paints .Therefore she used 3 cups of red paints.

Because =7×3=21