Question

To complete a work A and B takesa 8 days,
B and C takes 12 days. A, B and C takes 6
days. How much time A and C will take​

Answer 1

Answer:

7 days

Explanation:

woman's 1 day's work = 1/70

1 Child's 1 day's work = 1/140

5 Women and 10 children 1 day work =

\begin{aligned}

\left(\frac{5}{70}+\frac{10}{140}\right) \\

= \frac{1}{7}

\end{aligned}

So 5 women and 10 children will finish the work in 7 days.