Question

if a b c do a work in 90 30 and 45 days respectively. if they work together the time taken to complete the work is​

Answer 1

Step-by-step explanation:

1-day work = 1/30. Given that C can do a piece of work in 45 days. C's 1-day work = 1/45. ... Therefore the overall time is taken to complete the work = 15days