A carpenter worked alone for 1 day on a job that would take him 6 more days to finish. He and another carpenter completed the job in 3 more days. How many days would it have taken the second carpenter to do the complete job working alone?
Choose the correct choice from the following answers
A) 4 2/3 B) 7 C) 9 D) 14 E) 24
A carpenter worked only 1 day on something that takes him 6 MORE days.   Means;   Carpenter finishes his work in 7 days.   Let his buddy finish the same task in x days.   Respective rates per day:   1/7 AND 1/x   To complete 1 work:   First guy worked for 5 days @ rate=1/7 per day.   Second one worked for 3 days @ rate=1/x per day   Expression:   Days*Rate=Work   4*1/7+3*1/x=1   4x+21=7x   3x=21   x=7 days.   Ans:7
<result>B</result>
A carpenter worked alone for 1 day on a job that would take him 6 more days to finish. He and another carpenter completed the job in 3 more days. How many days would it have taken the second carpenter to do the complete job working alone?