Question

1.
A car travels at a rate of 30 km/hr for 5 minute and then at 40 km/hr for 10 minute.
Find (i) the total distance travelled by the car and (i) the average speed of the car.
A boy runs on a straight road from his home to the market 2.0 km away with a speed
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Answer 1

Answer:

(i) 9.17km

ii)11/18km/h

Explanation:

Total distance traveled by car = 30×5/60 + 40×10/60 = 110/12km = 9.17km

average speed is 110/(12×15)km/h =11/18km/h