. Last year the price of petrol was Rs.45 per litre. Recently, the government increased the price of petrol to Rs.50 per litre. The percentage increase in the price of petrol is:

 

Price of petrol in last year was Rs 45 per litre.New price of petrol after increament is Rs 50 per litre.Have to find :-Percentage increaseConcept :-Here, at first we will assume the increase percentage as y Then, we will Subtract the new price by Old price and then we will use the formula [Increased amount/Original amount × 100 ]. Let's solveSolution :-

Let the increased percentage be y

Increased Price = New Price - Old Price

Increased Price = 50 - 45

Increase in price = ₹5

Now,

y = [Increased amount/Original amount ] × 100y = 5/45 × 100y = 1/9 × 100y = 1 × 100/9y = 100/9y = 11.11%Hence :-

Let's Verify it11.11 = 5/45 × 10011.11 = 1/9 × 10011.11 = 1 × 100/911.11 = 100/911.11 = 11.11