(A + B)'s 2 day's work = \( \Large 2 \times \frac{1}{3} = \frac{2}{3} \)
Remaining work = \( \Large 1 - \frac{2}{3} \)= 1/3
A will complete 1/ 3 work in 2
A will complete 1 work in 6
A's 1 day's work = 1/6
B's 1 day's work = 1/ 3 - 1/6 = 1/6
B will take 6 days to complete the work alone.