Question

A and B can do a piece of work in 72 days Bandean do it in 120 days A and C can do it in90 days. In what time can, A, B and c together finished the work​

Answer 1

Answer:

60 days

Step-by-step explanation:

2(A+B+C)= 1/72+1/120+1/90

=5+3+4/360

A+B+C=12/360×2

=1/30×2

=1/60

So A B C can do together in 60 days