A lorry leaves a factory on a journey of 195 km at 08 45, travelling at an average speed of 52 km/h.
1: Find the time at which the lorry arrives at its destination.
2: On the return journey, the lorry leaves at 14 55 and arrives at the factory at 18 15.
Calculate the time taken and the average speed of the lorry on the return journey.
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Answer:
1.
lorry avg speed=52kmph
journey distance=195km
time taken=195/52
=3.75hr=3hr 45 min
journey started at 8:45
journey ended at 8:45+3:45=12:30
2.
lorry journey time=18:15-14:55=3hr 20min= 3.3333hr
avg speed=195/3.3333
average speed=58.5kmph
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