A and B separately can build a wall in 12 and 16 days, respectively. If they work for each day alternatively, starting with A, in how many days will the wall be built?
A. $$7\frac{2}{3}{\text{ days}}$$
B. $$12\frac{2}{3}{\text{ days}}$$
C. $$13\frac{2}{3}{\text{ days}}$$
D. $$6\frac{3}{4}{\text{ days}}$$
Answer: Option C
This Question Belongs to Arithmetic Ability >> Time And Work
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