The price of gasoline is $2.27 per gallon and decreases at the rate of $0.03 every two months. Oil costs $0.45 per gallon and increases at a rate of $0.05 every six months. How many years will it take for them to be equal in price
Can some one help understand how to do this please
A)7
B)5.5
C)6.5
D)6