Question

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

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

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

• A. i) ₹ 60
  ii) ₹ 45
• B. i) ₹ 75
  ii)​​​​​​​ ₹​​​​​​​ 80
• C. i) ₹ 45
  ii)₹​​​​​​​ 60
• D. i) ₹ 80
  ii) ₹​​​​​​​ 75

Answer 1

The correct option is A

i) ₹ 60
ii) ₹ 45

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

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