Problema Solution
The Jetsons are taking a family vacation. Their car gets 30 miles per gallon in gas mileage. They are traveling for seven hours at a rate of 55 miles per hour. Assuming no stops, how much gas will they need to complete their seven hour trip?
Answer provided by our tutors
Let
v = 55 mph the rate
t = 7 hr the time
d = the distance
Since distance = rate*time we have:
d = v*t
d = 55*7
d = 385 mi
Let 'x' represent the number of gallons spent.
30x = 385
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click here to see the equation solved for x
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x = 12.83 gal approximately
The Jetsons will need 12.83 gallons of gas to complete their trip.