A truck travels with a speed of 40 km / h for30 min then with a speed of 30 km/ h for 1 hour . calculate total distance travelled and averagespeed of the truck.
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35km/h
A truck travels with a speed of 40 km / h for30 min then with a speed of 30 km/ h for 1 hour . calculate total distance travelled and averagespeed of the truck.
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