Exercise :: Time and Distance  General Questions
 Time and Distance  Important Formulas
 Time and Distance  General Questions
 Time and Distance  Data Sufficiency 1
1.  A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour? 

Answer: Option B Explanation:
= 2 m/sec. Converting m/sec to km/hr (see important formulas section)
= 7.2 km/hr. Video Explanation: https://youtu.be/MtKCLibyJIE 
2.  An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in 1 hours, it must travel at a speed of: 

Answer: Option D Explanation: Distance = (240 x 5) = 1200 km. Speed = Distance/Time Speed = 1200/(5/3) km/hr. [We can write 1 hours as 5/3 hours]

3.  If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is: 

Answer: Option A Explanation: Let the actual distance travelled be x km.
14x = 10x + 200 4x = 200 x = 50 km. 
4.  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: 

Answer: Option C Explanation: Let speed of the car be x kmph.

5.  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? 

Answer: Option B Explanation: Due to stoppages, it covers 9 km less.
