48. Bob wants $200,000 in his retirement account when he retires in 25 years. How much does he need to deposit each month if his account pays 3.45% interest, compounded monthly? a. $666.67 b. $1,268.07 c. $634.04 d. $420.89 ____ 49. John and Rae want to buy a house in four years. They figured out that they would need about $10,000 for a down payment. How much should they deposit each month into one account that earns 2.1% interest compounded monthly? a. $208.33 b. $199.89 c. $204.34 d. $195.45 _____ 50. Andrew wants to open an account for his grandson that he hopes will have $25,000 in it when he turns 21. How much should Andrew put into an account monthly that earns 1.5% interest, compounded monthly, if he begins when his grandson is born? a. $84.46 b. $108.60 c. $99.21 d. $656.25