If the length of a rectangle is increased by 10% and the area is unchanged, then how much percent does the breadth decrease?

35 percent of a number is 1249.5. What is 78 percent of that number?

If the purchase price of an article is equal to 80 percent of its selling price then there will be profit.

Two candidates contested an election. One of them got 64% of the votes and won by 434 votes. What was the total number of votes polled? 

if 120% of a is equal to 80% of b, then $${b+a}\over {b-a}$$ is equal to

One-third of 1206 is what percentage of 134?

The price of milk is increased by 25%, by what percentage should a housewife reduce the use of milk in her house so that there is no increase in her monthly expenditure?

If x% of $${25\over 2}\%$$ is 150, then the value of x is :