Problem solving

Question

During a 256 mile trip, an automobile used 8 gallons of gasoline. At that rate how far can the automobile travel using 12 gallons of gasoline?

Answer 1

Find the miles per one hour by dividing the miles by the hours.

256miles/8 hours = 32 mph That is your unit rate per hour.

(12 hours) times the unit rate will cancel out hours and yield miles

10*32 + 2*32 = 320miles + 64 miles or 384 miles