Question

The fuel for a chain saw is a mix of oil and gasoline. The ratio of ounces of oil to gallons of gasoline is 9:19. There are 152 gallons of gasoline. How many ounces of oils are there?

Answer 1

Oi:gas=9:19

if gas=152 then find oil

ratio and proprtion

oil:gas=9:19=x:152
9:19=x:152
convert to fraction
$\frac{9}{19}=\frac{x}{152}$
multiply both sides by 152
$\frac{1368}{19}=x$
72=x

72 oz of oil

Answer 2

9/19 = x / 152....9 oz oil to 19 gallons gas = x oz oil to 152 gallons gas
cross multiply because this is a proportion
(19)(x) = (152)(9)
19x = 1368
x = 1368/19
x = 72 oz of oil <==