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Primary 6 Problem Sums/Word Problems - Try FREE
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A group of children left the school in a bus at 8.30 a.m. to visit a science museum.
30 minutes later, a group of teachers from the same school began travelling towards the museum at a speed of 36 km/h.
The children had another 6 km to travel when the teachers reached the museum at 11.30a.m.
Find the average speed at which the children were travelling.