Answer:
Ans. the annual rate of return, in order to turn $5,000 into $24,000 in 15 years is 11.02% annual.
Explanation:
Hi, well, in order to find the value of the interest rate of return, we need to solve for "r" the following equation,

Where:
n= years (time that the money was invested)
r=annual rate of return (Decimal)
So, let´s see the math of this.


![\sqrt[15]{(24,000)/(5,000) } =1+r](https://img.qammunity.org/2020/formulas/mathematics/college/dxmd7s5acn0hcb1futhn1haqls9ajmly36.png)
![\sqrt[15]{(24,000)/(5,000) } -1=r](https://img.qammunity.org/2020/formulas/mathematics/college/v53s5v602f9vd1depxfu682hva8y7g4l72.png)

So the annual rate of return that turns $5,000 into $24,000 in 15 years is 11.02%.
N=15; PV=5,000; FV=24,000; PMT=N.A; I/Y=11.02% P/Y=N.A
Best of Luck.