Question

Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 8 liters of synthetic oil. In order to make 663 liters of Petrolyn oil, how many liters of synthetic oil are needed?

Answer 1

408 liters

Explanation:

Find the ratio.

Natural oil to synthetic oil = 5 : 8

Total oil used = 5 + 8 = 13

1 unit = 663 : 13 = 51

Synthetic oil proportion is 8 = 8 x 51 = 408 liters