Question

Speed of the train excluding stoppages is 15 km/hr and including stoppages is 11 km/hr. The train
stops in 1 hr for​

Answer 1

Given:

The speed of the train excluding stoppages = 15 km/hr

The speed of the train including stoppages = 11 km/hr

To find:

The stopping time for the train in 1 hr

Solution:

To find the average stopping time (in minutes) for the train per hour, we will use the following formula:

$\boxed{\boxed{\bold{Average\:stopping\:time\:= \frac{Difference}{Speed \:excluding \:stoppages} \times 60 }}}$

where

Difference between the speeds = 15 - 11 = 4 km/hr

Now, by substituting the given values in the formula, we get

$Average\:stopping\:time\:= \frac{4}{15} \times 60 \\\implies Average\:stopping\:time\: = 4\times 4 \\\implies Average\:stopping\:time\: = 16\: minutes$

Thus, the train stops in 1 hr for 16 minutes.

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