Answer:
7.63%
Step-by-step explanation:
26000 = 18000 (x)β΅
Divide both sides by 18000
1.4444444444 = xβ΅
Raise both sides to the (1/5) power
1.4444444444^(1/5) = x
1.0763169225 = x
interest = x - 1
interest = 0.0763169225
Appox interest rate = 7.63%