Question

If the present petrol price is ₹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%, the increase in price is $\frac{20}{100}\times 50=₹10$

Therefore, the new petrol price $=50+10=₹60$

ii) When there is a decrease of 10%, the decrease in price is $\frac{10}{100}\times 50=₹5$

Therefore, the new petrol price $=(50-5)=₹45$