Question

If 2gal of premium unleaded gasoline costs $6.44 how much would it costs to completely fill a tank whose capacity is 8-gal?

Answer 1

The answer is $19.32.

Explanation:

Because 2 gallons equals $6.44, all you have to do is either add $6.44 three times or multiply it by three. This is because 2 to the power of three equals 8.