If A can complete a job in 10 days and along with B he can complete the same job in 6 days, how much of the job remain to be completed if both work for 4 days and A alone works for two more days ?

 If A can complete a job in 10 days and along with B he can complete the same job in 6 days, how much of the job remain to be completed if both work for 4 days and A alone works for two more days ?

A). 2/15

B). 3/15

C). 4/15

D). 7/15

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