8. The petrol prices shot up by 7% as a result of the
hike in the price of crudes. The price of petrol be-
fore the hike was 28 per litrel Vawal travels 2400
kilometres every month and his car gives a mileage
Xof 18 kilometres to a litre. Find the increase in the
expenditure that Vawal has to incur due to the in-
crease in the price of petrol (to the nearest rupee)?
(a) *270
(b) 262
(c) *276
(d) *272
Answers
Given : The petrol prices shot up by 7% . The price of petrol be- fore the hike was 28 per litrer. Vawal travels 2400 kilometres every month . his car gives a mileage 18 kilometres to a litre
To Find : increase in the expenditure that Vawal has to incur due to the in- crease in the price of petrol
Solution:
The price of petrol before the hike was 28 per litre
The price of petrol after the hike was 28+ (7/100)28 = 28*1.07 per litrel
increase in price = 28 * 0.07 rs litre
travels 2400 kilometres
mileage 18 kilometres to a litre
Petrol used in 1 month = 2400/18 = 400/3 litre
increase in expenditure = 28 * 0.07 * 400/3
= 261.33
262 is increase in the expenditure that Vawal has to incur due to the in-
crease in the price of petrol
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