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Mwale takes 2 h 12min to cycle from home to school at an average speed of 8 metres per second. He cycles from school back home at an
average speed of 12 metres per second. How much time does Mwale take to cycle from home to school and back?
A. 1 h 28min
B. 4 h 24min
C. 3 h 40min
D. 2 h 56min