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16.
A and B run a 5 km race on a round course of 400 m. If their speeds be in the ratio 5 : 4, how often does the winner pass the other?
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A.4
1 times 2 -
C.2
3 times 4
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B.3
1 times 2 -
D.2
1 times 2
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| When A makes 5 rounds, B makes 4 rounds. | ||||||||||||||
| In order to pass each other, the difference in number of rounds made by each must be one. Here, A passes B each time. When A makes 5 rounds. |
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17.
In a 100 m race, A runs at 5km/hr. A gives B a start of 8 m and still beats him by 8 sec. Find the speed of B
- A.6.14 km/hr
- C.3.14 km/hr
- B.4.14 km/hr
- D.2.14 km/hr
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
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18.
A can run 20 metres while B runs 25 metres. In a km race B beats A by -
- A.250 metres
- C.200 metres
- B.225 metres
- D.125 metres
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| In a 25 metres race B beats A by 5 metres. | ||||||||||||
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19.
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| so that the race ends in a dead heat? |
- A.150 m
- C.120 m
- B.100 m
- D.None of these
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Assuming L = distance of the winning post such that the race ends in a dead heat, i.e., booth the participants A and B reach the wining post at the same time. | ||||||||||||||||||||
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20.
A can run a kilometre in 4 min. 54 sec. and B in 5 min. How many metres start can A give B in a km race so that the race may end in a dead heat?
- A.20 metres
- C.18 metres
- B.16 metres
- D.14.5 metres
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
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