Maria Fay bought four dunlop tires at a local goodyear store. The salesperson told her that her mileage would increase by 9%. Before this purchase, maria was getting 27 mpg.

Answer 1

27 mpg increased by 9%

= 1.09(27) = 29.43 mpg with the new dunlap tires

9% = .09.

.09(27) =2.43

27+2.43 = 29.43 mpg