A is correct what is B ?

my work Problem 5-41 Retirement Savings (L03) A couple will retire in 40 years, they plan to spend about $27,000 a year in retirement, which should last about 20 years. They believe that they can eam 7% Interest on retirement savings a. If they make annual payments into a savings plan, how much will they need to save each year? Assume the first payment comes in 1 year. (DO not round Intermediate calculations. Round your answer to 2 decimal places.) Annual saling S 1.432.62 b. How would the answer to part (a) change if the couple also realize that in 15 years they will need to spend $57,000 on their child's college education? (Do not round Intermediate calculations. Round your answer to 2 decimal places.) Annual saming