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Difficulty:
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Question Stats:
56% (01:57) correct
44%
(02:25)
wrong
based on 236
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The average speed of Salem Express train is 60 kmph. if the halts at various stations is excluded then the average speed is 80 kmph. What is the average halt time (in hours) per hour of Salem Express train?
A. 0.20
B. 0.25
C. 0.30
D. 0.35
E. 0.40
(Source : Wizako)
A. 0.20
B. 0.25
C. 0.30
D. 0.35
E. 0.40
(Source : Wizako)
16 Aug 2022, 10:11
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The average speed of Salem Express train is 60 kmph. if the halts at various stations is excluded then the average speed is 80 kmph. What is the average halt time (in hours) per hour of Salem Express?
A. 0.20
B. 0.25
C. 0.30
D. 0.35
E. 0.40
Given, average speed (with halts) = 60 km/h.............(1)
average speed (without halts) = 80 km/h.........(2)
So, Salem Express train should travel in 1 hour = 80 km
But, actually (ie, with halts) it travels in 1 hour = 60 km
It implies
Salem Express train halts for a time equivalent of (80-60)km= 20 km
from (1),
average speed (without halts) = 80 km/h
So,
time equivalent of 20 km = (20 km) / (80 km/h)
= 0.25 h
(B) is the CORRECT option
The average speed of Salem Express train is 60 kmph. if the halts at various stations is excluded then the average speed is 80 kmph. What is the average halt time (in hours) per hour of Salem Express?
A. 0.20
B. 0.25
C. 0.30
D. 0.35
E. 0.40
Given, average speed (with halts) = 60 km/h.............(1)
average speed (without halts) = 80 km/h.........(2)
So, Salem Express train should travel in 1 hour = 80 km
But, actually (ie, with halts) it travels in 1 hour = 60 km
It implies
Salem Express train halts for a time equivalent of (80-60)km= 20 km
from (1),
average speed (without halts) = 80 km/h
So,
time equivalent of 20 km = (20 km) / (80 km/h)
= 0.25 h
(B) is the CORRECT option
