Train A which is 320 m long can cross a pole in 16 seconds. If it halts 5 times each time for exactly 18 minutes, how many hours will it take to cover a distance of 576 km? (in hours) 

The ratio of income of A, B and C is 7: 9: 12 and their expense ratio is 8: 9: 15, if the savings of A is 1/4 of its total income, then the savings of A, B and C What will be the ratio?

Harsha is 40 years old and Ritu is 60 years old. How many years ago was the ratio of their ages 3 : 5 ? 

If a = 2.234, b = 3.121 and c = –5.355, then the value of $$ a^3 + b^3 + c^3 – 3abc$$ is

A person can buy a refrigerator for Rs.15,850 on cash payment or in installments for every year at 10% p.a for four years compounded annually. What is the approximate annual installment that he should pay?

Directions: Study the following pie chart carefully and answer the questions given beside.
The following pie chart gives the information about breakup of six different categories of workers in a company.

In category A, the ratio of male workers to female workers is 2 : 3. The number of female workers in category A is what percentage of the total number of workers in category F?

5 men can do a piece of work in 6 days while 10 women can do it in 5 days. In how many days can 5 women and 3 men do it?