An airplane begins a flight with a total of 39.3 gal of fuel stored in two separate wing tanks. During the flight, 25.3% of the

Question

An airplane begins a flight with a total of 39.3 gal of fuel stored in two separate wing tanks. During the flight, 25.3% of the fuel in one tank is used, and in the other tank 34.2% of the fuel is used. If the total fuel used is 12.1 gal, the amounts x and y available in each tank before flight can be found by solving the system of equations which is below.
x+y=39.3
0.253x+0.342y = 12.1
Find x and y.

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