A can do a piece of work in 25 days and B in 20 days. They began the work together but 5 days before the completion of the work, A leaves. The work was completed in?
Choose the most appropriate option
A) 19 1/3 days
B) 10 1/3 days
C) 13 1/3 days
D) 15 1/3 days
E) 13 2/3 days
(x – 5)/25 + x/20 = 1   x = 13 1/3 days   ANSWER:13 1/3 days
<result>C</result>
A can do a piece of work in 25 days and B in 20 days. They began the work together but 5 days before the completion of the work, A leaves. The work was completed in?