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Sum of first 12 numbers = (12 × 65) = 780 Sum of last 5 numbers = (76 × 5) = 380 Sum of 11th and 12th number = (780 - 380) = 400 So, 12th number = 400 × (7/20) = 140
A Bus moving at a speed of 's' km/h can pass a stationary person in 16 seconds and a tunnel Bridge that is 240 meters long in 28 seconds. Determine the ...
How far will 'Raj' travel by the time he catches up to 'Amit', given that 'Raj' starts 120 km behind and moves at 50 km/h while 'Amit' moves at 40 km/h?
A train traveling at a speed of 90 km/h crosses a platform of length 200 meters in 24 seconds. What is the length of the train?
A and B are travelling towards each other with a speed of 10 km/hr and 20 km/hr. They started at same time and A covered 15 km less distance than B befo...
Amit covered 360 kilometers in total trip time. He covered the remaining 200 km on a bicycle at a speed that was 5 km/h slower than that of the bus afte...
If I can walk a certain distance in 25 days when I rest 8 hours a day, how long will it take me to walk twice as far as if I walk twice as fast and res...
If a person walks 25% more than of his usual speed, reaches his distance 90 minutes before. If the destination is 217.5 km away, then the usual speed of...
Aman travels from point A to point B at a speed of 20 m/s and then returns from point B to point A at a speed of 108 km/h. The total time for the round ...
1500 metres long train crosses a man who is moving in the same direction with a certain speed, in 50 seconds. If the same train can cross a tree in 15 s...
