b) A truck has to cover 350 Km in 7 hours. For the first 2 hours it travels at a speed of 50 Km/hr. What should be its speed after that to reach the destination in the desired time?
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Answer:
50km/h
Explanation:
distance - 350 - 100 = 250km
time - 7 - 2 = 5hours
Speed = 250/5 = 50km/h
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