Find The interest rate

Question

If an investment compounded continuously grows from $68,000 to $92,000 in five years, what is the interest rate to the nearest hundredth of a percent?

Answer 1

A = 68000e^rt = amount after t years

68000e^5r = 92000

e^5r = 1.35294

5r = ln(1.35294) = 0.30228

r = 0.060456 ≈ 6.05%