The price of petrol rose by 10%. By how consumption should be reduced so that expenditure does not increase.

The price of sugar goes up by 20%. By how much percent must a hours wife reduce her consumption so that the expenditure does not increase?

After allowing a discount of 20% on the marked price of a lamp, a trader loses 10%. By what percentage is the marked price above the cost price?

A defective briefcase costing Rs 800 is being sold at a loss of 8%. If the price is should be reduced by 5%, find its selling price.

The price of coffee rose by 20% following shortange in availability in the market. As a result , Carlose decided to mitigate increasing expenses by reducing his coffee intake. By what percentage should Carlos reduce his intake so that there is no effect on the expenditure on coffe ?

The slant height of a cone is increased by 10%. If the radius remains the same, the curved surface area is increased by (a) 10% (b) 12.1% (c) 20% (d) 21%

The volume of air increases by 10% in the adiabatic expansion. The approximate percentage decrease in its pressure will be: (Assume gamma = 1.4 )

The price of a certain computer is increased by 10% , and then the new price is increased by an additional 5% . The new price is what percentage of the original price?

In jume, the price of a DVD player that sells for $150 is increased by 10%. In july, the price of the same DVD player is decreased by 10% of its current selling price. What is the new selling price of the DVD player?

The salary of Gopal was increased by 10% and then the increased salary was decreased by 10% . Find the net increase or decrease per cent in his original salary.

A store reduces the price of a CD player by 20% and then reduces that price by 15%. If the final price of the CD player is $170, what was its original price?