Question

If the present petrol price is ₹ 50 per litre, then what is the new price when:

i) There is an increase in the price by 20% on the original price?

ii) There is a decrease in the price by 10% on the original price?

• A. ₹ 60, ₹ 45
• B. ₹ 75, ₹ 80
• C. ₹ 45,₹ 60
• D. ₹ 80, ₹ 75

Answer 1

The correct option is A

₹ 60, ₹ 45

i) When there is an increase by 20% on the price, the increase in price is:
= $\frac{20}{100}\times 50=10$
Therefore, the new petrol price is: ₹ (50 + 10) = ₹ 60 per litre

ii) When there is a decrease by 10% on the price, the decrease in price is:
= $\frac{10}{100}\times 50=5$
Therefore, the new petrol price is: ₹ (50 - 5) = ₹ 45 per litre