Question

A taxi cab driver pulls into a gas station to fill her fuel tank. The fuel tank for the car
holds 20 gallons of fuel, but it has 3 gallons in the tank. The fuel pump sends 2 gallons
of gasoline per minute once it is turned on. How much time is needed to fill the car to 20 gallons? I already know the answer but I don't know how to write a equation from the question. so please answer with a equation.

Answer 1

Answer:

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Answer 2

Answer:

510seconds or 8.5minutes

Step-by-step explanation:

Capacity of the fuel tank = 20 gallons

Fuel present in the car = 3 gallons

Fuel required be filled = 20-3 = 17 gallons

Time taken to fill 2gallons = 1minute = 60seconds

Time taken to fill 1gallon = 60/2 = 30seconds

Time taken to fill 17gallons = 17×30

= 510seconds