A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds. Its length is:
A) 50 m B) 150 m C) 200 m D) data inadequate
Answers
Answered by
0
Answer:
the correct option is D as the result comes out 60 but that option isn't mentioned here.
In case 1
speed =distance/15 m/s
In case 2
speed=100/25 m/s
speed=4m/s
from case 2,substitute the value of speed in case case 1
=> 4=distance/15
distance =60
Answered by
5
Answer:
I50 m
Step-by-step explanation:
let the length of the train be x and speed y
x/y=15
y=x/15
Therefore x+100/25=x/15
15(x+100)=25
15x+1500=25x
1500=10x
x=150
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