Arun and Tarun can do a work in 10 days.After 4 days tarun went to his village.How many days are required to complete the remaining work by Arun alone.Arun can do the work alone in 70 days. Choose one:	A) 16 days.	B) 17 days.	C) 18 days.	D) 19 days.	E) 42 days.
They together completed 4/10 work in 4 days.   balance 6/10 work will be completed by Arun alone in   70*6/10= 
<gadget id="calculator">  70*6/10</gadget>
<output>42</output>
42 days.   ANSW42 days.R:42 days.
<result>E</result>
Arun and Tarun can do a work in 10 days.After 4 days tarun went to his village.How many days are required to complete the remaining work by Arun alone.Arun can do the work alone in 70 days.