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. Calculate the total distance covered by the car.
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Answer:
(ii) 25 km
Speed (s1) = 40km/h
Time (t1) = 15 mins = (15/60) hr
Distance d1 = (s1 × t1) = 40 × (15/60) = 10 km
Speed (s2) = 60 km/h
Time (t2) = 15 min = (15/60) hour
Distance (d2) = (s2 × t2) = 60 × (15/60) = 15 km
Total distance (d) = (d1 + d2) = 10 km + 15 km = 25 km
Explanation:
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40km/h=10km/15 min
60km/h=15km/15min
total distance=(10+15)=25km
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