The cost of an article goes down every year by 20% of its previous value. Find original cost if the cost of it after 2 years

June 2023 1 3 Report

The cost of an article goes down every year by 20% of its previous value. Find original cost if the cost of it after 2 years is 319,200?

Answer:

Let the cost of the article be 'x'

After 1 year, it's price be = x- (20% of x)

20% of x = 20/100* x = x/5

price = 4x/5

After 2 years

price = 4x/5 - (20% of 4x/5)

3,19,200 = 4x/5(4/5)

by solving this,.

x = Rs. 30000

Original cost of article is Rs.30,000/-