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 B

Given:
Present Sale = ₹1,28,800
First Year Increase = 12%
Second Year Increase = 15%

Formula Used:
Sale two years ago = Present Sale ÷ (1 + Second Year Increase%) ÷ (1 + First Year Increase%)

Solution:
Sale two years ago = ₹1,28,800 ÷ 1.15 ÷ 1.12 

= $$₹1,28,800 \times \frac{1}{ 1.15} \times \frac{1}{ 1.12}$$ ​

= $$₹1,28,800 \times \frac{1}{1.288}$$​​
= ₹1,00,000