A 300 metre long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform?
A.320 m
B.350 m
C. 650 m
D.Data inadequate
Answers
Answered by
5
hey mate
options B. is crrct.
speed = 300/18 = 50/3 m/s
let Length of the platform be x m
then (x + 300)/39 = 50/3
3(x + 300) = 1950
3x + 900 = 1950
3x = 1950 - 900
x = 1050/3
x = 350
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options B. is crrct.
speed = 300/18 = 50/3 m/s
let Length of the platform be x m
then (x + 300)/39 = 50/3
3(x + 300) = 1950
3x + 900 = 1950
3x = 1950 - 900
x = 1050/3
x = 350
mark as brainliest if u found it useful
singherakashpdteuf:
350m answer hai
Answered by
2
signal pole crosses in 18sec
speed of train s= 300÷18
s=16.66m/s
let length of platform be l
s=(300+l)/39
16.66×39=300+l
650=300+l
l=350m
speed of train s= 300÷18
s=16.66m/s
let length of platform be l
s=(300+l)/39
16.66×39=300+l
650=300+l
l=350m
mark as brainliest please
bro pls mark as brainlist
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