A is twice as good workman as B, and together they complete a work in 10 days. In how many days can the work be complete by B alone?	Choose the correct choice from the following:  A) 35 days  B) 30 days  C) 45 days  D) 75 days  E) 95 days
30 days=3A   30 days   30 days
<result>B</result>
A is twice as good workman as B, and together they complete a work in 10 days. In how many days can the work be complete by B alone?