Answer:
Monthly return % per month = 1,24%
Explanation:
The formula to determined the value of the perpetuity cash flow is :
PV of perpetuity = Periodic cash inflow/ Interest rate
Perpetuity is characterized by being a kind of annuity where cash continues forever.
PV of the perpetuity = Periodic cash inflow/ Interest rate
$113,000 = $1,400 / Interest Rate
Interest rate = 1,400/ 113,000 = 1,24%
Interest rate = 1.24% per month