Question

A 10% hike in petrol price between yesterday and today means that a man who paid ₹200 for some petrol yesterday,will pay for the same quantity today.

• A. ₹200
• B. ₹220
• C. ₹120

Answer 1

The correct option is B ₹220

When the price of petrol increases by 10%,

Revised price = original price + 10% of original price

= original price + orignal price $\times \frac{10}{100}$

=original price(1 + $\frac{10}{100}$ )

= original price $\times \frac{110}{100}$

If original price = Rs 200 for a certain quantity,

Revised price for the same quantity = $\frac{110}{100}\times 200$ = ₹ 220.