Question

Dan alone can do a piece of work in 30days and Mike alone can do the same work in 27days. If Mike works for 9days and then leaves, then in how many days will Dan finish the work???

Answer 1

Answer:

45 days

Step-by-step explanation:

mike one day work =1/27

mike work for 9 days work done =1/3

remaining =2/3

30/2/3=30*3/2=45 days