The sum of present ages of a father and his son is 8 years more than the present age of the mother. The mother is 22 years older than the son. What will be the age of the father after 4 years?

The sum of the ages of 4 children born at intervals of 3 years each is 46. What is the age of the youngest child?

Kamal has 160 toffees. He gave 5% toffees to Ravi, 15% toffees to Anita and one-fourth of the toffees to Gagan. How many toffees are left with Kamal after the distribution?

In an examination X secures 58% marks and Y secures 105 marks less than X. If the maximum marks were 700, then what percent of marks did Y secure?

Aman’s expense is 30% more than Vimal’s and Vimal’s expense is 10% less than Raman’s. If the sum of their expenses is ` 6447, then what would be Aman’s expense?

If a number is reduced by 40% it becomes twothirds of another number. What is the ratio of the first number to the second number?

The cost price of an article is 8550. What should be the selling price of the article so that there is a profit of 9%?

The price of an article is first increased by 25% and later on decreased by 40% due to reduction in sales. Find the net percentage change in final price of the article.