SOLUTION: the hybrid car costs $30,000, and goes 50 miles/gallon its regular (non-hybrid) counterpart costs $20,000, and goes 20 miles/gallon you drive 15,000 miles/year on the

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Question 851225: the hybrid car costs $30,000, and goes 50 miles/gallon
its regular (non-hybrid) counterpart costs $20,000, and goes 20 miles/gallon
you drive 15,000 miles/year on the average.
how long will it take for you to reach the benefit of the hybrid car

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
The fuel price is also important. No prediction possible without it.
Let p = price per gallon of fuel.

Let y = the number of years owned for both cars.

HYBRID
Cost: 30000%2B15000%281%2F50%29py
30000%2B%281500%2F5%29py
30000%2B300py

REGULAR TYPE
Cost: 20000%2B15000%281%2F20%29py
20000%2B750py

WHEN ARE COSTS EQUAL?
30000%2B300py=20000%2B750py
10000=450py
y=10000%2F%28450p%29
highlight%28y=25%2Fp%29

Choose the fuel price that is needed or as given. Obviously, the higher the fuel price, the fewer the number of PREDICTED years until the cost for the hybrid reaches as low as the regular car. Price of fuel is not constant nor steady.

Some places now are where gasoline is 4 dollars per gallon.
y=25%2Fp=25%2F4=highlight_green%286%261%2F4%29 years