Question
Each question contains a statement followed by
Quantity I and II. Read the information clearly and answer your questions accordingly.  Quantity I:  The average weight of 30 people is increased by 1.5 kg when one man weight 48 kg is replaced by another man. Find the weight of new man? Quantity II: T he average weight of 60 students in a class is 70 kg. The weights of two students were wrongly entered as 72 kg and 64 kg instead of 64 kg and 52 kg respectively. Find the corrected average weight of the class? ÂSolution
Quantity I: Increased Average = 1.5, Number of people (n) = 30 Average = Total sum/n Total weight increased = 1.5 `xx` 30 = 45 kg Weight of new man = 45 + 48 = 93 kg Quantity II: Total weight of 60 students = 60 `xx` 70 New weight = (60 `xx` 70) – 72 – 64 + 64 + 52 = (60 `xx` 70) – 20 New average = (4200 – 20)/60 = 69.66 kgÂ
Pipes A and B alone can fill a tank in 12 minutes and 18 minutes, respectively, while pipe C alone can empty the full tank in 36 minutes. If all the pip...
There was a leakage in the petrol tank. If 5litre of petrol is leaked out per day then it would have lasted for 30 days. If the leakage was 7litre per d...
- Pipes ‘D’ and ‘E’ alone can fill a tank in 16 minutes and 24 minutes, respectively, while pipe ‘F’ can empty the same tank in 48 minutes. If al...
A Tank has two pipes one can fill it with water in 16 hours and other can empty it in 10 hours. In how many hours will the Tank be emptied if both the p...
Pipe ‘A’ can fill a tank in 30 hours while pipe ‘B’ can empty it in 40 hours. They were operated on alternate hours starting with pipe ‘A’. ...
There are 4 inlet and (y-3) outlet pipes attached to a tank. Each inlet pipe takes 30 hours to fill the tank, and each outlet pipe empties the fully fil...
An inlet can fill a tank in 36 minutes, and an outlet can drain it in 54 minutes. Find the time required to fill half the tank when both pipes are open.
Pipe ‘A’ can fill 25% of a tank in 6 hours while pipe ‘B’ takes 40 hours to empty fully filled tank. Pipe ‘A’ is ope...
A bought an article at 8% less of the marked price and sold it at 15% more than the marked price. Find the profit earned by him.
Pipe X can empty a completely filled tank in 60 hours. Pipe Y and X together can fill an empty tank completely in (z+6) hours. The efficiency of pipe Y ...
Relevant for Exams:
