X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If complete work was finished in 16 days, Y can alone finish that work in :

X can do a piece of work in 24 days. When he had worked for 4 days, Y

1.	X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If complete work was finished in 16 days, Y can alone finish that work in :
A.	27 days
B.	36 days
C.	42 days
D.	18 days
Answer» C. 42 days

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X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If complete work was finished in 16 days, Y can alone finish that work in :

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