If a man cycles at 10 km/hr, then he arrives at a certain place at 1 PM. If he cycles at 15 km/hr, he will arrive at the same place at 11 AM. At what speed must he cycle to get there at noon?
11 km/hr
12 km/hr
13 km/hr
14 km/hr
Answers
Answered by
2
Answer:
The correct option is B.
Explanation:
When speed of the man = 10 km/hr = d/t
When speed of the man = 15 km/hr = d/(t-2)
Equating the value of d,
10 × t = 15 × (t - 2)
t = 6 hours.
Desired speed = d/(t-1) = 10t/(t-1) = 12
Answered by
0
Answer:
Explanation:
If a man cycles at 10 km/hr, then he arrives at a certain place at 1 PM. If he cycles at 15 km/hr, he will arrive at the same place at 11 AM. At what speed must he cycle to get there at noon?
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