Question

A and B together can do a piece of work in 10 days. C can do the same work alone in 15
days. If A, B and C work together, then number of days to finish the work is
​

Answer 1

Answer:

6

Step-by-step explanation:

$\frac{1}{10} + \frac{1}{15} \\ \frac{3 + 2}{30} \\ \frac{5}{30} \\ \frac{1}{6}$

Hence number of days = 6