A completes a work in 12 days whereas B completes the same work in 24 days. If both A and B work together, the work will be completed in ____ ?

– by 0

A. 8
B. 11
C. 5
D. 17

The formula is A * b / A + B
= 12 * 24 / 12 + 24
= 288 / 36
= 8

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