Question

A train travels from Station 'A' to Station 'Z'. If it does
not stop at any station between Stations 'A' and 'Z',
then it completes its journey at a speed of 80 km/h.
However, if it stops at all the stations between
Stations 'A' and 'Z', then it completes its journey at a
speed of 52 km/h. For how many minutes does the
train stop per hour?
19
24
23
21​

Answer 1

Answer:

hello dear friend hope it help you xd

Step-by-step explanation:

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Answer 2

Given : A train travels from Station 'A' to Station 'Z'. If it does

not stop at any station between Stations 'A' and 'Z',

then it completes its journey at a speed of 80 km/h.

if it stops at all the stations between Stations 'A' and 'Z', then it completes its journey at a speed of 52 km/h

To find : For how many minutes does the train stop per hour

Solution:

Let say Distance  =  D km

Speed 80 km/hr

Time taken = D/80  hrs

Speed 52 km/hr

Time taken = D/52  hrs

Extra time taken   = D/52  - D/80

= ( 20 - 13) D / 1040

= 7D/1040 hrs

(7D/1040) / (D/52)

= 7/20 hrs

= 7 * 60/20  mins

= 21 mins

train stop per hour = 21 mins

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