Two trains running in opposite directions cross a man standing on the platform in 21 seconds and 11 seconds respectively and they cross each other in 17 seconds. The ratio of their speeds is.
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Answered by
0
Answer:
Step-by-step explanation:
It is 3:2
21x +11y = 17x+17y
21x-17x=17y-11y
x/y=4/6 or 6/4
and ration 3:2
Answered by
2
Answer:
here is your answer..
Step-by-step explanation:
Let the speeds of the two trains be x m/sec and y m/sec respectively.
Then, length of the first train = 21x metres,
Length of the second train = 11y metres.
[distance = speed*time]
(21x+11y)/(x+y)=17
=>21x+11y=17x+17y
=>4x=6y
=>x/y=6/4=3/2=3:2
hope it helps you
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