The fuel tank in a car holds 20 gallons of gasoline. The car has a fuel efficiency rating of 24 miles per gallon. If the gas tank is full when the family begins, and their destination is 1,600 miles away, what is the least number of times they will have to stop and fill the gas tank to get to their destination?

3

Step-by-step explanation:

1600 miles × (1 gallon / 24 miles) = 66⅔ gallons

66⅔ gallons × (1 tank / 20 gallons) = 3⅓ tanks

Rounding up to the nearest integer, the family will need 4 tanks.  Since they start with a full tank, they will need to stop at least 3 times.

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step-by-step explanation:

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no not all of them.

step-by-step explanation:

some of them have a square base.