A fuel-oil mix is 15:1 how many litres of each is in a 6.6L mix

Question

The fuel for a two-cycle motorboat engine is a mixture of gasoline and oil in the ratio 15:1. how many litres of each are in 6.6 L of mixture 

Answer 1

15 + 1 = 16 total parts

6.6 / 16 = 0.4125 liters per part.

 

15 * 0.4125 = 6.1875 liters of gasoline

1 * 0.4125 = 0.4125 liters of oil