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Question

The cost of petrol was ₹400 per litre. If it increases by __%, then the revised cost would be ₹440 per litre.
  1. 10

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Solution

The correct option is A 10
Increase in petrol price = ₹440 - ₹400 = ₹40

Let the increase be a%.

a% of Initial value = Increase
a100×400=40
a=40400×100=10

Therefore, there is 10% hike in the cost of petrol.

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