Trevor began his pizza delivery route with 7/10 of a tank of gas in his car. When he made it back to the pizzeria, 2/5 of a tank
of gas was left. How much gas did Trevor use?
1 answer:
You need to find a common denominator. The common denominator is 10. So 2/5*2=4/10
7/10-4/10=3/10
Trevor used 3/10 of a tank of gas.
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