If in April the crude oil price would have been lesser than the given by Rs. 223 per metric tonne then how much would have been the percentage increase in price over the earlier month?

Correct Answer: 15

Explanation:

In April, crude oil price = Rs. 4800 per metric tonne.
So, reduced crude oil price = 4800 - 223 = Rs. 4577
Hence, required percentage = 4577 - 3980/3980 x 100 = 15%