The petrol price shot up by 10% as a result of the hike in crude oil prices. The price of petrol before the hike was ₹ 90 per litre. A person travels 2200 km every month and his car gives a mileage of 16 km per litre. By how many km should he reduce his travel if he wants to maintain his expenditure at the previous level ?
A.180 km
B.200 km✓ Correct
C.220 km
D.240 km
Explanation
Original expenditure: (2200/16) × 90 = 137.5 × 90 = ₹12,375. New petrol price = ₹99 per litre. To keep expenditure ₹12,375 at ₹99/litre, litres used = 12375/99 = 125 litres. New distance = 125 × 16 = 2000 km. Reduction in travel = 2200 − 2000 = 200 km. Hence the person should reduce travel by 200 km.
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