I need help with this one math problem.

Question

Two savings accounts pay interest rates that differ by 1%. Equal amounts of money were invested in each account for a year. One account returns $200 in interest and the other returns $225. What is the lower interest rate?

A. 10%

B. 8%

C. 7%

D. 9%

Answer 1

Ax=200 and A(x+.01)=225

.01A=25

A=2500

2500x=200

x=.08