X can do a piece of work in 40days. He works at it for 8days and then Y finished it in 36days. How long will Y take to complete the work? Select the correct option:
A) 45
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 36days   Whole work will be done by Y in 36*5/4= 
<gadget id="calculator">36*5/4</gadget>
<output>45</output>
45 days   45nswer is 45
<result>A</result>
X can do a piece of work in 40days. He works at it for 8days and then Y finished it in 36days. How long will Y take to complete the work?