Question

My mother says in her childhood petrol was Re 1 a litre. It is Rd 52 per litre today. By what percentage has the price gone up?

Answer 1

Initial price = Rs 1
Current price = Rs 52
The increase in price = 52-1
                                  =  Rs 51
Percentage increase=  (Increase in price ÷Initial price) * 100
                                 = (51÷1) * 100
                                 = 51 * 100
                                 = 510 % 

Answer 2

increased value=52-1=51

increase %= 51/1*100=5100%