17/11/2020 4:21 pm
TSD (Time speed and distance)
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Two straight roads R1 and R2 diverge from a point A at an angle of 120°. Ram starts walking from point A along R1 at a uniform speed of 3 km/hr. Shyam starts walking at the same time from A along R2 at a uniform speed of 2 km/h. They continue walking for 4 hours along their respective roads and reach points B and C on R1 and R2, respectively. There is a straight line path connecting B and C. Then Ram returns to point A after walking along the line segments BC and CA. Shyam also returns to A after walking along line segments CB and BA. Their speeds remain unchanged. The time interval (in hours) between Ram’s and shyam’s return
to the point A is (2003)
0
25/04/2024 5:39 pm
Robert is travelling on his cycle and has calculated to reach point A at 2 P.M. if he travels at 10 kmph, he will reach there at 12 noon if he travels at 15 kmph. At what speed must he travel to reach A at 1 P.M.?
8 kmph
11 kmph
12 kmph
14 kmph
0
04/06/2024 6:16 pm
A train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is:
100 kmph
110 kmph
120 kmph
130 kmph
0
04/06/2024 6:17 pm
Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
9
10
12
20
0
04/06/2024 6:17 pm
In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is:
1 hour
2 hours
3 hours
4 hours
Neraj (TG) 06/08/2024 6:43 pm
Let the original duration of flight be t hrs.
So, original average speed = 600/t
Due to bad weather speed of trip is reduced by 200 km/hr and time of flight is increased by 30 minutes i.e. 0.5 hr.
Reduced average speed = (600/t) - 200
0
03/08/2024 6:48 pm
Virat and Anushka started a car journey from Chandigarh to Delhi, which are 288 km apart. Virat took 12 hours more than Anushka to complete the journey. Had Virat travelled at double his actual speed, he would have taken 4 hours less than Anushka to complete the journey. Find the respective speeds (in km/hr) at which Virat and Anushka travelled.
1.14.4 and 9
2.14.5 and 28.5
3.9 and 14.4
4. 15 and 20
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