A and B finish the job in 15 days.while A,B and C can finish it in 10 days . C alone will finish the job in  Pick one:  A) 40 days  B) 30 days  C) 60 days  D) 70 days  E) 50 days
Explanation:   10 = (15 * x)/(15 + x)   150+10x=15x   5x=150   X=30   Answer: Option 30 days
<result>B</result>
A and B finish the job in 15 days.while A,B and C can finish it in 10 days . C alone will finish the job in