The average per day income of A, B and C is Rs. 450. If the average per day income of A and B be Rs. 400 and that of B and C be Rs. 430, the per day income of B is: 

The water in a river is flowing at a rate of 4 km/hr. If the width and depth of the river are 8m and 4m respectively, then how much water will enter the sea in 15 minutes? 

The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The  observation is

A positive integer when divided by 425 gives remainder 45. When the same number is divided by 17, the remainder will be 

Find the inner surface area of all walls of a rectangular room with length 7 m breadth 5 m and height 3.5 m -  

Shyam covers a distance of 400 km in 5 hours. He traveled for some time at a speed of 85 km / h and the rest at a speed of 55 km / h. How long did he travel at high speed?

A, B and C contract a work for Rs. 550. Together A and B are to do 7/11 of the work. The share of C should be?

A principal increases by 21% over 2 years with compound interest. What will be the simple interest in 4 years at the same interest rate of Rs 1000?