Question : P and Q start from the same point and at the same time with speeds of 20 km/hr and 16km/hr respectively. What is the distance between P and Q after 4 hours if both move in the same direction?
Option 1: 12 km
Option 2: 20 km
Option 3: 15 km
Option 4: 16 km
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Correct Answer: 16 km
Solution : The relative speed of P concerning Q = 20 km/hr − 16 km/hr = 4 km/hr Now, use the formula of distance ⇒ Distance = Speed × Time = 4 km/hr × 4 hr = 16 km Hence, the correct answer is 16 km.
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Question : Trains A and B are running in the same direction at 40 km/hr and 60 km/hr, respectively. If both the trains start at the same time from the same place, then what will be the distance between them after 1 hour?
Option 1: 10 km
Option 3: 40 km
Option 4: 0 km
Question : A bus can travel 20% faster than a scooter. Both start from point P at the same time and reach point Q, 60 km away from point P, at the same time. On the way, however, the bus lost about 10 minutes while stopping at bus stations, while the scooter did not stop anywhere. What is the speed of the bus?
Option 1: 68 km/hr
Option 2: 80 km/hr
Option 3: 60 km/hr
Option 4: 72 km/hr
Question : Ram travels with speeds of 15 km/hr, 10km/hr, and 12 km/hr for three equal distances. What is his average speed if the total distance travelled by him is 180 km?
Option 1: 15 km/hr
Option 2: 18 km/hr
Option 3: 20 km/hr
Option 4: 12 km/hr
Question : Two trains 100 metres and 95 metres long, respectively pass each other in 27 seconds when they run in the same direction and in 9 seconds when they run in opposite directions. The speeds of the two trains are:
Option 1: 44 km/hr, 22 km/hr
Option 2: 52 km/hr, 26 km/hr
Option 3: 36 km/hr, 18 km/hr
Option 4: 40 km/hr, 20 km/hr
Question : An auto-rickshaw travels 20 km from point P to Q and then 25 km from Q to R. The total time taken was 1 hour 30 minutes. What was the average speed of the auto-rickshaw?
Option 2: 30 km/hr
Option 3: 45 km/hr
Option 4: 60 km/hr
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