If length of a rectangle is increased by20% and breadth decreased by 10%,find change in area

A man sold 2 mobile phones at the rate of 1500Rs each.If he gets a profit of 20% in one transaction and a loss of 20% in another transaction,find by what percent he lost or gained in the whole.

If a number is increased by 40% and decreased by 40%,what will be the result?

 The income of Anand is 25% less than income of Balu.Then by what percentage income of balu more than Anand.

Ramesh’s income is more than Mahesh’s income by 20%.Then by how much percentage Mahesh’s income less than Ramesh’s income?

Raju bought a shirt with 15% discount.Had he bought the shirt without discount,he would have paid Rs 60 more.Find CP of the shirt