Question

Raju takes30days and Babu takes 20 days to finish a work. Then the number of days needed to finish the same work together is​

Answer 1

Answer:

12

Step-by-step explanation:

$\frac{1}{number \: of \: days} = \frac{1}{20} + \frac{1}{30} \\ = \frac{2 + 3}{60} \\ = \frac{5}{60} \\ number \: of \: days = \frac{60}{5} = 12$

Answer 2

Answer:

1/12 days

Step-by-step explanation:

work done by both =1/30+1/20

So, 2+3/60=1/12 days