Question

Nail Polish. A Specific shade of red nail polish requires 7 parts red to 2 parts yellow. A mixture contains 45 quarts. How many quarts of red? How many quarts of yellow?

Answer 1

7+2=9 parts
45÷9=5 so 5 times each part
7×5 =35 so 35 quarts of red
2×5=10 and 10 quarts of yellow