Manu works 3 times as fast as Raju. If Raju can complete a job alone in 60 days, then in how many days can they together finish the job?

Milkman has a container filled with a mixture of milk and water which are in the ratio of 7 : 3. How many parts of the mixture needs to be removed and replaced from the water to obtain milk and water in ratio of 1 : 1?

If the difference between the two expenditures is represented by 180⁰ in the pie-chart, then these expenditures possibly are:

The number which can be written in the form of n (n+1) (n+2), where n is a natural number, is: 

The ratio of two numbers is 5 : 11. If both numbers are increased by 10, the ratio becomes 7 : 13. What is the sum of the two numbers?

A train 300 m. long is running with a speed of 54 km/hr. In what time will it cross a telephone pole?

The length, breadth and height of a room is 21 metres, 12 metres and 16 metres. What will be the length of the largest rod that can be placed in that room?

After 4 years, the difference between principal and simple interest is Rs. 228 at the rate of 6 percent simple interest, so what is the amount of principal?