1.

A car travels a certain distance for 45 minutes with the velocity of 40 km per hour and then a distance for 30 minute with the velocity of 60 kilometre per hour in the same directionCalculate : 1. total distance travelled by a car2.total time of journey in hours3.average velocity of the car ​

Answer»

speed =distance/ TIME

distance=1800 km 1 st case

speed = distance/ time

=1800km 2nd case

total distance =3600 km

total time of journey is = 1hour 15 mins

AVERAGE velocity =total distance/total time TAKEN

=3600/115 minutes

=now divide and you will get your answer



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