Question

An automobile uses 17 gal of fuel to go to 590mi. How many gallons are required to travel 870mi? (Round your answer to one decimal)

Answer 1

`Gallons = 27.95`

Explanation:

Given

`Gallons : Miles = 17:590`

Required

Determine the number of gallon for 870 miles

To do this, we simply substitute 870 for miles in the ratio above

So, we have:

`Gallons : 870= 17:590`

Convert to fraction

`(Gallons)/(870) = (17)/(590)`

Multiply through by 870

`870 * (Gallons)/(870) = (17)/(590)*870`

`Gallons = (17)/(590)*970`

`Gallons = (17*970)/(590)`

`Gallons = (16490)/(590)`

`Gallons = 27.95`