A person could save 10% of his income.But 2 years later,when his income increased by 20%,he could save the same amount only as before.By how much percentage has  his expenditure increased?

16 litres of mixture contains milk and water in the ratio 5:3.If 4 litres of milk is added to the mixture,ratio of milk to water in the new mixture will be

There is 60% increase in an amount in 6 years at SI.What will be the CI on Rs 12000 after 3 years at the same rate of interest?

A milkman claims to sell milk at cost price only,but he making a  profit of 20% since he has mixed  some amount of water in the milk.What is the percentage of milk in the mixture?

What is the maximum value of m if the number N=35*45*55*60*124*75 is divisible by 5^m?

The difference between Compound itnerest and simple interest  at the same rate of interest R percent p.a on an amount of Rs 15000 for 2 years is Rs 96.What is ths value of R?