3
QuizMultiple Choice
Simple Interest
Question 3 • MO-Mathematics 7
Mara found the length of time of an investment. The principal of the investment was $4,300, the interest rate was 6.2 percent, and the interest was $2,666. Mara made an error in her work.What was Mara’s error?
Answer
A
Mara did not substitute the values from the problem into the formula correctly.B
Mara did not multiply correctly.C
Mara did not divide correctly.D
Mara divided when she should have multiplied.