The income of Amina Bibi was increased by 20% and later decreased by 20%. Let's work out the total change of percentage of her income.

If momentum is increased by 20%, then kinetic energy increases by

The length of a rectangle is increased by 15% and the breadth is reduced by 15%. Let’s work out in percentage the increase or decrease of area.

If the radius of a right circular cylinder is increased by 50% and height is decreased by 20%, then the percentage change in volume of cylinder is

The cost of onion has increased by 20%. Ramchandra babu has decided not to exceed the monthly expenses towards the purchase of onion. Let’s calculate in percentage how much he will reduce the use of onion per month.

If the current sensitivity of a moving coil galvanometer is increased by 20% , its resistance also increased by 1.5 times. How will the voltage sensitivity of the galvanometer by affected?

The price of sugar has increased by 20%. Let’s work out the percentage of sugar uses should be decreased if the monthly expenses of sugar remained same.

When water freezes into ice, it increases in volume by 10%. Let’s work out in percentage how much it will decrease in volume if the ice melts into water.