Question

A car moves with a speed of 50 Km/hr for 15 minutes and then with a speed of 80 Km/h for the next 15minutes. Find the total distance covered by the car.​

Answer 1

Answer:

Explanation : Speed of car in first 15 minutes = 40 km/h

Speed of car in first 15 minutes = 40 km/hDistance covered = speed × Time taken

Speed of car in first 15 minutes = 40 km/hDistance covered = speed × Time taken60 minutes = 1 hour

Speed of car in first 15 minutes = 40 km/hDistance covered = speed × Time taken60 minutes = 1 hour15 minutes = 15/60 hour

Distance covered = 240× 15/60

=10 km

Speed of car in next 15 minutes = 60 km/h

Distance covered = 60× 15/60

=15 km.

∴Total distance covered = (10+15)km = 25km ans.

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Answer 2

Answer:

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it is because 80 km/h for 15 mins is 20 km and 60 km/h for 15 mins is 15 km....!!!