Question
Three boys, on an average, are 25 years old, and their
age are in the ratio of 3 : 5 : 7. What is the age of youngest boy'?Solution
The correct answer is D
A sprinter is 600 metres behind another runner and begins a chase at a speed of 22 m/s. If the runner ahead is moving at 14 m/s, find out the time it wi...
Buses A and B are moving around a circular ground of radius 210 m. If the speeds of the buses A and B are 16 m/sec and 20 m/sec respectively, then what ...
A train covers a certain distance at a speed of 36 km/h and the next same distance with a speed of 45 km/h and the next same distance with a speed of 60...
X started to run from point ‘A’ to ‘B’ at a speed of 28 km/hr at 9:00 am and Y started to run from point ‘B’ to ‘A’ at a speed of 12 km/...
- A bus travels from point A to point B at a speed of 48 km/h and makes the return trip from B to A at a speed of 56 km/h. If the total time taken for the ro...
A man travelled a total distance of 300 km. He travelled first 100 km on car with a speed of 20 km/h and rest of the distance on bike whose speed is 10 ...
A person covers one-fourth of a trip at a speed of 10 km/hr and takes ‘x’ hours for that. If he had completed the whole journey at a speed of 20 km/...
A superbike takes 84 minutes to cover 112 km. If the speed of the superbike is decreased by 20 km/h, then find the time taken by the superbike to cover ...
A man running with the speed of 65 km/hr covers a certain distance in ‘x’ hours. If the same distance can be travelled with a speed of 70 km/h in (x...
A train running at a speed of 72 km/h crosses another train running in the opposite direction at 54 km/h in 12 seconds. The length of the first train is...
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