Problema Solution
Raina drove 240 miles using 9 gallons of gas. At this rate, how many gallons of gas would she need to drive 216 miles?
Answer provided by our tutors
the rate of Raina is v = 240/9 milers per gallon
let g = the gallons of gas needed for d = 216 miles ride
assuming the rate is constant we have
v = 216/g or
216/g = 240/9
by solving we find
g = 8.1 gal
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Raina needs 8.1 gallons of gas to drive 216 miles.