Question

An elephant can do a work as fast as two horses ‘A’ and ‘B’ can do it by working together. If horse ‘A’ alone can complete the work in 8 hours and horse ‘B’ in 12 hours, then find the time taken by elephant to complete the work.

A 4.8 hours
B 11.2 hours
C 12.2 hours
D 13.2 hours
E None of these
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