Mohan gets 12% increase in his sale amount in the first year and 15% increase in the second year, with that his present sale is Rs. 1,28,800. What was his sale two years ago?

Correct option is D

Given:
Increase in first year = 12%
Increase in second year = 15%
Present sale = 1,28,800
Solution:
Let the amount of sale before two years ago be x
According to the question
Amount after 1st year = x × $$\frac{112}{100}$$​

Amount after 2nd year = x × $$\frac{112}{100} × \frac{115}{100}$$​​
As per question

x × $$\frac{112}{100} × \frac{115}{100}$$ = 128800 

x = $$128800\times \frac{100}{112}\times\frac{100}{115}$$​​

x = 1,00,000

Two years before his sale was Rs. 1,00,000.