A and B together do a work in 20 days.B and C together in 15 days and C and A in 12 days.then B alone can finish same work in how many days?	Choose the correct answer:
A) 50
B) 60
C) 45
D) 35
E) 48
(A+60) work in 1 day= 1/20,(60+C) work in 1 days = 1/15.,(C+A) work in 1 days=1/12   (1) adding=2[A+60+C] in 1 day work = [1/20+1/15+1/12]=1/5   (A+60+C) work in 1 day= 1/10   60 work in 1 days= [A+60+C] work in 1 days- work of (A+C) in 1 days   =[1/10-1/12]=1/60   60 alone finish work in 60 days   Answer 60
<result>B</result>
A and B together do a work in 20 days.B and C together in 15 days and C and A in 12 days.then B alone can finish same work in how many days?