Question

A bus driver filled up 7/8 of her fuel a tank for a trip. She used 6/7 of the fuel by the end of the trip. The capacity of her tank is 70 gallons.
How much fuel did she use for the trip?
7/8 x 70 = 245/4 = 61.25 gallon was filled
6/7 x 245/4= 105/2 = 52.5 gallon

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