Question

Xand y complete work in 8 hour if x alone 12 hours than y complete

Answer 1

Answer:

Step-by-step explanation:

Answer 2

In 1 hour x and y together complete = 1/8 part of the work

In 1 hour x alone does = 1/12 part of the work

In 1 hour y alone completes = {(1/8)-(1/12)}

                                                 ={(3-2)/24}

                                                 = 1/24 part

1/24 part of the work is completed in 1 hour

1 part of the work is completed in =(1)/(1/24)

                                                          = (1*24)/1

                                                         = 24 hours

(Ans): 24 hours.