Mona is 20% younger than Neetu. By how much percent is Neetu older than Mona ?

If the price of sugar is increased by 25% today, by what percent should it be decreased tomorrow to bring the price back to the original ?

A number decreased by 23% becomes 539. Find the number.

Two numbers are respectively 20 percent and 50 percent more than a third number. What percent of the first number is the second number?