a bus driver filled up 7/8 of her fuel 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 sue for the trip. express answer a decimal
(6/7)(7/8)(70) = .75*70
To find out how much fuel the bus driver used for the trip, we need to multiply the capacity of her fuel tank by the fraction representing the amount of fuel she used.
First, let's calculate the amount of fuel she filled up before the trip. The bus driver filled up 7/8 of her fuel tank, and the capacity of her tank is 70 gallons. To find out how much fuel she filled up, multiply 7/8 by 70:
Amount of fuel filled up = (7/8) * 70 = 7 * 10 = 70 gallons
Now we need to find out how much fuel she used during the trip. The bus driver used 6/7 of the fuel by the end of the trip. To calculate the amount of fuel used, multiply 6/7 by the amount of fuel filled up:
Amount of fuel used = (6/7) * 70 = 6 * 10 = 60 gallons
Therefore, the bus driver used 60 gallons of fuel for the trip.