Answer:
-7.407%
Step-by-step explanation:
Let interest rate be x%
Present value of payment = $130,002 * PV of discounting factor (rate%, time period)
$103,200 = $130,002 * 1.0x^3
1.0x^3 = $103,200 / $130,002
1.0x = ($103,200 / $130,002)^(1/3)
1.0x = 0.793834^(1/3)
1.0x = 0.92592660981
x = (0.92592660981 - 1) * 100
x = -0.07407*100
x = -7.407%