Question

The cost of a car goes down every year by 15 per of it previous value find the original cost if the cost of it after 2 years is rs.216750

Answer 1

final value=p×(1-R/100)^t
216750=x X(1-15/100)^2
216750=x. X85/100×85/100
x=216750 X 10000/85×85
X=30000