Question

The gasoline gauge on a van initially read one eighth 1 8 full. when 1010 gallons were added to the​ tank, the gauge read three fourths 3 4 full. how many more gallons are needed to fill the​ tank?

Answer 1

3/4 - 1/8 = 6/8 - 1/8 = 5/8...so 5/8 = 10 gallons

(5/8) / 10 = 1 / x
cross multiply
(5/8)(x) = (10)(1)
5/8x = 10
x = 10 * 8/5
x = 80/5 = 16 <== so it would take 16 gallons to fill the tank