Final answer:
Maurice would need a simple interest rate of approximately 17.09%.
Step-by-step explanation:
To find the simple interest rate Maurice would need, we can use the formula:
Interest = Principal × Rate × Time
We know the principal amount is $65,000, the future amount is $175,000, and the time is 18 years. Let's solve for the rate:
175,000 = 65,000 × Rate × 18
Simplifying the equation, we get:
Rate = 175,000 / (65,000 × 18)
Rate = 0.1709 or 17.09%
Therefore, Maurice would need a simple interest rate of approximately 17.09% to grow his $65,000 into $175,000 in 18 years.