A can do a piece of work in 10 days and B can do it in 15 days and C can do it 20 days. They started the work together and A leaves after 2 days and B leaves after 4 days from the beginning. How long will work lost?	Pick one:
A) 09 2/3  B) 10 2/3  C) 11 2/3  D) 12 2/3  E) 16 2/3
10 2/3   10 2/3   2/10 + 4/15 + x/20 = 1   x = 32/3 = 10 2/3
<result>B</result>
A can do a piece of work in 10 days and B can do it in 15 days and C can do it 20 days. They started the work together and A leaves after 2 days and B leaves after 4 days from the beginning. How long will work lost?