Question

Q. The full-tank petrol in Deepti’s Scooter lasts for 10 days. If She starts using 25% more petrol every day, how many days will the full-tank petrol last?

• A. 4 days
• B. 6 days
• C. 8 days
• D. 10 days

Answer 1

The correct option is C 8 days

Explanation:
If initially She uses x litres of petrol every day and now she is using 1.25x litre petrol every day then full tank petrol will last for:
$\frac{x\times 10}{1.25x}=8$