Question

a motorcyclist Travels at 30 km per hour and stops for half an hour at the end of every 75 km how long will it take him to cover 375 km

Answer 1

speed is 30km/hr.
distance is 375km

actual time without any stop will be


time =distance by speed

= 375/30
=12½hr.


but stops after every 75kms.


so no. of times he will stop. 375/75
= 5 Times.

and each stop is ½hr .

so 5 stops will be 2½hrs.


so total time taken
is.


2½+12½

5/2 + 25/2


= 30/2

=> 15 hrs(Ans)

Answer 2

speed =30 km per hour
time taken to cover 375 km =12 hrs 30 mins(12hrs for 360 km and 30 min for 15 kms)
time he stopped = 2hrs (75km , 150 km, 225km,300km = 4 times )
30 min *4 =120 min =2 hrs
total time taken to complete the journey = 12hrs 30 min +2 hrs = 14 hrs 30 mins
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