Respuesta :

Given:
r = 8% = 0.05, simple interest rate
t =  2 years, duration
A = 15,000.00, value after 2 years

Let P = principal, the amount invested.
Then 
P(1+ 2*0.05) = 15000
P = 15000/1.1 = 13636.36

Answer: Php 13,636.36