Question
The mean of 25 numbers is 14. If 3 is added to every
number, what will be the new mean?Solution
The correct answer is B
Pipe ‘X’ alone can fill a tank in 20 hours. When pipe ‘X’ and ‘Y’ are opened together, they can fill 60% of the same tank in 6 hours. Find t...
Two pipes M and N can fill a tank in 16 hours and 24 hours respectively. The pipes were opened together, but pipe N stopped working after sometime and t...
Inlet pipes 'A' and 'B' can fill a tank in 24 minutes and 40 minutes, respectively. Both the pipes are opened together to fill the tank. When the tank i...
- There are two inlet pipes 'A', 'B' and one outlet pipe 'C' in a tank. ‘A’ and ‘B’ can fill the tank in 24 minutes and 16 minutes respectively. ‘C...
Two vessels 'A' and 'B' contains 480 litres, each of pure milk and pure water, respectively. 120 litres of milk is withdrawn from vessel 'A' and poured ...
A tank can be filled by two pipes, A and B, in 15 minutes and 20 minutes, respectively. Both pipes are opened together, but after 5 minutes, pipe A is c...
- Pipe A alone and pipe C alone can fill the empty tank in 50% less time and 25% less time respectively than the time taken by pipe B to empty the full tank....
Pipe 'A' fills half tank in 14 minutes. Pipe 'B' is 4 times as efficient. What % of the tank will be filled by both in 4 minutes?
Pipe A alone fill the tank in x hours and Pipe B alone fill the tank in (x – 7) hours. If the efficiency of pipe B is double of pipe A and pipe A fill...
A water tank has two holes. The 1 hole alone empties the tank in 9 minutes and 2nd hole alone empties the tank in 6 minutes. If water leaks out at a con...
