A plane flies 3 h and uses 45 gal of 100LL aviation fuel. How much will be used if the plane flew only 1.5 h?

Question

Quizplus · Accepted Answer

We can use the formula: fuel used = (fuel burn rate) x (time flown). Let's call the fuel used in 1.5 hours "x". 
We can set up a proportion:

fuel used in 3 hours / 3 = x / 1.5

Simplifying the left side:

45 gal / 3 = 15 gal/hour

Multiplying both sides by 1.5:

15 gal/hour x 1.5 hours = 22.5 gallons

Therefore, the answer is B) 22.5 gallons.

A Plane Flies 3 H and Uses 45 Gal of 100LL