X can do a piece of work in 40days. He works at it for 8 days and then Y finished it in 24 days. How long will Y take to complete the work?
Choose the correct choice from the following:  A) 30  B) 12  C) 15  D) 18  E) 20
Work done by X in 8days = 8*1/40 = 1/5   Remaining work = 1 - 1/5 = 4/5   4/5 work is done by Y in 24 days   Whole work will be done by Y in  24*5/4= 
<gadget id="calculator"> 24*5/4</gadget>
<output>30</output>
30days   30nswer is 30
<result>A</result>
X can do a piece of work in 40days. He works at it for 8 days and then Y finished it in 24 days. How long will Y take to complete the work?