Question

A can do a piece of work in 5 days B in 8days and C in 12 days. How long they take to complete the work together?​

Answer 1

Answer is

$2 \frac{11}{12}$

Step-by-step explanation:

$\frac{5 \times 7}{5 + 7} = \frac{35}{12} = 2 \times \frac{11}{12}$