A person could save 20% of his income. A year later, his income increased by 25% but he could save the same amount only as before. By what percentage has his expenditure increased?

Kamal saves x% of her monthly income. When her monthly expenditure is increased by 20% and the monthly income is increased by 26%, then her monthly savings increased by 60%. What is the value of x?

The number of girls in a class is 20% more than the number of boys. There are total 66 students in this class. If 4 more girls are admitted in the class, then the ratio of the number of boys and girls will be?

When the tax on an article is increased by 20%, its consumption is decreased by 20%. In total tax receipt on this item-

Out of an earning of Rs.720, Pankaj spends 65%. How much does he save?

If x% of is 150, then the value of x is : 

Rishu saves x% of her income. If her income increases by 26% and the expenditure increases by 20%, then her savings increase by 50%. What is the value of x?

if 120% of a is equal to 80% of b, then is equal to