Question

Popet leaves his house at 8.00 A.M for his school. The school is 2 km away and classes start at 9.00 A.M. If he walks at a speed of 3 km/h for the first kilometre and 6 km/h for the second kilometer.So, what speed (in km/hr) should he walk the last 1 kilometre to reach just in time?

Answer 1

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