Time and Distance
Time and Distance - Important Points
| 11. | How many km per hour does a man walk passes through a street 600 meter long in 5 minutes? |
|---|
A. 3.6 kmph
B. 7.2 kmph
C. 8 kmph
D. 7 kmph
View Answer Discuss Work SpaceAnswer: option b
Explanation:
Formula : Speed = Distance / Time
Man's speed in meter per second = 600 / (5 x 60) = 2 m /sec
=> 2 m / sec = 2 x 18/5 kmph = 36/5 kmph = 7.2 kmph
| 12. | While going to his office, a man calculates to reach 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 at 1 P.M.? |
|---|
A. 8 kmph
B. 11 kmph
C. 12 kmph
D. 14 kmph
View Answer Discuss Work SpaceAnswer: option c
Explanation:
Let the distance travelled by x km
Then, x/10 - x/15 = 2
=> 3x - 2x = 60
=> x = 60 km.
Time taken to travel 60 km at 10 km/hr = (60/10) hrs = 6hrs.
So, he started 6 hours before 2 P.M. i.e., at 8 A.M.
To reach A at 1 P.M, time required = 5 hours
Therefore, Required speed = Distance/ time = (60/5) kmph = 12 kmph
| 13. | In covering a distance of 30 km, Amit takes 2 hours more than Shyam. If Amit doubles his speed, then he would take 1 hour less than Shyam. Amit's speed is: |
|---|
A. 5 kmph
B. 6 kmph
C. 6.25 kmph
D. 7.5 kmph
View Answer Discuss Work SpaceAnswer: option a
Explanation:
Let Abhay's speed be x km/hr.
Earlier, Amit was taking 2 hrs more but after doubling the speed, he is taking 1 hr less. So, difference is 3 hrs.
So, 30/x - 30/2x = 3
=> 6x = 30
=> x = 5 km/hr
| 14. | 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? |
|---|
A. 9
B. 10
C. 12
D. 20
View Answer Discuss Work SpaceAnswer: option b
Explanation:
Due to stoppages, it covers 9 km less.
Time taken to cover 9 km = ( 9/54 x 60 ) = 10 min
| 15. | A man has to cover a distance of 60 km in 4 hours. If he covers half of the journey in 3/4 of the time, then what should be his speed to cover the remaining distance in the remaining time left? |
|---|
A. 26 kmph
B. 32 kmph
C. 28 kmph
D. 30 kmph
View Answer Discuss Work SpaceAnswer: option d
Explanation:
Distance left = 1/2 * 60 = 30 km
Time left = (1 – 3/4) * 4 = 1 hour
Speed = Distance / Time = 30/1 = 30 kmph
Time and Distance Questions and Answers FAQ
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