Question

a . The petrol price is reduced by 10%. Find by how much user must increase the consumption of petrol so that his expenditure on petrol is not decreased?​

Answer 1

Answer:

Increase in price of petrol = 10% Let first price = Rs. 100 p.l. ∴ Increased price = 100 + 10 = Rs. 110 Now reduction in comsuption = 110 - 100 = 10 Percentage reduced consumption = 10×100100=10011=9111% The price of petrol goes up by 10%.

Answer 2

Answer:

Increase in price of petrol = 10% Let first price = Rs. 100 p.l. ∴ Increased price = 100 + 10 = Rs. 110 Now reduction in comsuption = 110 - 100 = 10 Percentage reduced consumption = 10×100100=10011=9111% The price of petrol goes up by 10%.