a car travels at the speed of 20 km per hr for 2 hours and 60 km per hr what is the average speed
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Answer:
40 kph * 2 hr = 80 km
60 kph * 3 hr = 180 km
2 hr + 3 hr = 5 hr
80 km + 180 km = 260 km
avg vel = 260 km / 5 hr
avg vel = 52 kph
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a car is travelling certain distance in certain time as
for 2 hr with 20 km/hr = 2 × 20 = 40 kms will be covered
for another 2 hrs 60 km/hr = 2 × 60 = 120 kms will be covered
total distance covered = 40kms + 120kms = 160kms
total time taken is = 2hrs + 2hrs = 4hrs
average speed = ( total distance ) / ( total time ) = 160/4 = 40km/hr
average speed of the car is 40km/hr
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