Question

ethyl and Henry Ross earned $ 211.11 in simple interest in 3 years at an annual interest rate of 3.1%. How much money did they invest to the nearest dollar?

Answer 1

$2270

Explanation:

they want to know what the initial investment was, not how much interest the $211 or whatever would make. so they made 211 or so in interest because they invested 2270

Answer 2

211.11*3/3.1
211.11 times 3 divied by 3.1 = 7