B completes a work in 8 days. A alone can do it in 10 days. If both work together, the work can be completed in how many days? Pick one
A) 3.75 days B) 4.44 days C) 5 days D) 6.44 days E) 7 days
1/8 + 1/10 = 9/40   40/9 = 4.44 days   ANSWER:4.44 days
<result>B</result>
B completes a work in 8 days. A alone can do it in 10 days. If both work together, the work can be completed in how many days?