Franklin has his eye on a new car that will cost $18,500. He has $15,900 in his savings account, earning interest at a rate of 0.6 percent per month....

Franklin has his eye on a new car that will cost $18,500. He has $15,900 in his savings account, earning interest at a rate of 0.6 percent per month.

a)How long will it be before he can buy the car? b)How long will it be before Franklin can buy the car if, in addition to his existing savings, he can save $280 per month?