Question

If the present petrol price is Rs.50, then what is the new price when:

i) there is an increase of 20% on the original price?

ii) there is a decrease of 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 of 20% on the price, the increase in price is:
= $\frac{20}{100}\times 50=10$
Therefore, the new petrol price is: Rs. (50 + 10) = Rs. 60

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