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Question
A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is????
A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is????
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Solution
For the first part of journey,
Speed=40km/h and time=15min=1/4 hour
Using, speed=distance/time
Distance=40 x 1/4=10km
For the second part of journey,
Speed=60km/h and time=15 min=1/4 hour
Then distance=60 x 1/4=15 km
Total distance travelled in whole journey=10+15=25 km
Speed=40km/h and time=15min=1/4 hour
Using, speed=distance/time
Distance=40 x 1/4=10km
For the second part of journey,
Speed=60km/h and time=15 min=1/4 hour
Then distance=60 x 1/4=15 km
Total distance travelled in whole journey=10+15=25 km
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