The price of petrol is increased by 25%. How much percent must a car owner reduce his consumption petrol so as not to increase his expenditure on petrol?

If the price of sugar is raised by 25%, find by how much percent a householder must reduce his consumption of sugar so as not to increase his expenditure?

If the price of petrol falls down by 20% by how much per cent must a person increase its consumption, so as not to decrease the expenditure on his item ?

the price of sugar is increased by 15%, find by how much per.cost householder must reduce her consumption of sugar so as not to increase expenditure

If the price of a commodity be raised by 40%,by how much percent must a householder reduce his consumption of that commodity, so as not to increase his expenditure?

The price of petrol goes up by 10%. By how much per cent must a motorist reduce the consumption of petrol so that the expenditure on it remains unchanged?

If the price of milk falls down by 20%, by how much per cent must a householder increase its consumption, so as not to decrease his expenditure on this item?