- Home
- General Aptitude
- Time and Distance
6.
A man walks at the speed of 4 km/hr and runs at the speed of 8 km/hr. How much time will the man require to cover a distance of 24 kms, if he completes half of his journey walking and half of his journey running?
- A.12 hours
- C.4 1/2 hours
- B.5 hours
- D.3 hours
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Required time = Time taken for walking + Time taken for running | |||||||||||||||||||||||
|
|||||||||||||||||||||||
7.
Two trains are traveling in the same direction with speed of 30 km/hr and 58 km/hr respectively. A man in the slower train passes the faster train in 18 seconds. Find the length of the faster train.
- A.120 km
- C.100 m
- B.140 km
- D.70 km
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Speed of the slower train = 30 km/hr | |||||||||||
| Speed of the faster train = 58 km/hr | |||||||||||
| As the train we are traveling in the same direction, relative speed = 58 - 30 = 28 km/hr | |||||||||||
|
|||||||||||
|
|||||||||||
| Length of the faster train = 140 m | |||||||||||
8.
A car after covering half of a distance of 100 km develops some engine trouble and later travels at half its original speed. As a result it arrives 2 hours later than its normal time. What was the original speed of the car?
- A.40 km/hr
- C.30 km/hr
- B.25 km/hr
- D.35 km/hr
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Let the original speed of car be x km/hr | ||||||||||||||||||||||
|
||||||||||||||||||||||
| Now, the car travels 50 km at x km/hr and another 50 km at x/2 km/hr | ||||||||||||||||||||||
|
||||||||||||||||||||||
9.
In a 1000 m race, A can beat B by 20 m, While in a 500 m race B can beat C by 15 m. By what distance will A beat C in a 100 m race?
- A.4.92 m
- C.4 m
- B.4.94 m
- D.4.90 m
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| In a 1000 m race, when A runs 1000 m B runs 980 m. | ||||||
|
||||||
| In a 500 m race when B runs 500 m, C runs 485 m | ||||||
|
||||||
| When A runs 100 m, B runs 98 m and C runs 95.06 m | ||||||
|
||||||
10.
A plane takes 4 hours to go 3600 km with the wind. The return flight takes 6 hours. Assuming that the wind speed and direction have not changed, calculate the speed of the plane.
- A.700 km/hr
- C.750 km/hr
- B.600 km/hr
- D.150 km/hr
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Let x km/hr be the speed of the plane and y km/hr be the speed of the wind. | ||||||||
| Speed during onward flight = x + y | ||||||||
| Speed during onward return flight = x – y | ||||||||
|
||||||||
|
||||||||
|
||||||||
|
||||||||
|
|
||||||||||||||||||||||||||||
