If mass of body is increased by 20% and its speed is decreased by 20% then percentage decrease in magnitude of its momentum will be

A number is increased by 20% and then it is decreased by 20%. Find the net increase or decrease per cent.

Salary of a person is first increased by 20%, then it is decreased by 20%. The percentage change in his salary is

In a family a person saves 30% of his income . If his salary is increased by 20% and saving are decreased by 20% then find the percentage increase in the expenditure.

A number is increased by 20% and then it is decreased by 10%. Find the net increase or decrease per cent.

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