A 400 meter long train moving with an average speed crosses platform in 25sec.A man crosses the same platform in 4 mints.what is speed of man (m/sec)
none
cannot be determined
1.5
1.2
1.8
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0
Answer:
cannot. be determined.
Step-by-step explanation:
let length of platform be x
speed of train be y
speed of man be z
A/q
(400+x)/25=y -1
(x/240)=z. -2
it clear that from two equation three variables can't be find.
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