Question
Forty nine persons are standing in a row and their
average weight is 66 kg. If the average weight of the first 25 persons is 68 kg and the average weight of the last 25 persons is 64 kg, then find the weight (in kg) of the 25th person.Solution
The correct answer is A
In a 400-metre race, ‘A’ beats ‘B’ by 20 seconds or 80 metres. Find the time taken by ‘B’ to finish the race.
'A' and 'B' are running on a circular track of length 3600 metres. 'A' is running clockwise at 4 m/s while 'B' is running anti-clockwise at 6 m/s. Find ...
A cheetah can catch a deer running with a speed of 144 km/h and is 50 meters ahead of it, in 10 seconds. Find the time taken by the cheetah to catch a z...
A dog is 1,500 metres ahead of a man when the man starts chasing by running at 18 m/s. If the dog is running at 10 m/s, then find the time taken by the...
If a man covers a distance in 1 hour, walking at a speed of 5 km/hr, how long will it take him to cover 15 km?
- Two runners, ‘M’ and ‘N’, started from opposite ends of a track towards each other at the same time. When they met after 3 hours, runner ‘N’ ha...
A car can travel 320 kilometers in 8 hours. If a bike travels at a speed that is (3/16)th that of the car, how far will the bike go in 2 hours?
Riya rides a bike at an average speed of 50 kmph and reaches her destination in 6 hours. Himani covers the same distance in 5 hrs. If Riya increases her...
Two trains, A and B, start from two stations 240 km apart at the same time. Train A travels at 60 km/h and Train B travels at 40 km/h. After how much ti...
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 3:2 respectively. Ajay left the place 42 seconds after Vishal. If af...
Relevant for Exams:
