A and B complete a work in 80 days. A alone can do it in 40 days. If both together can do the work in how many days?  Answers.
A) 1.0875 days B) 0.1875 days C) 0.0675 days D) 0.0375 days E) 0.0775 days
1/80 + 1/40= 
<gadget id="calculator">1/80 + 1/40</gadget>
<output>3/80 = around 0.0375</output>
0.0375 days   ANSWER:0.0375 days
<result>D</result>
A and B complete a work in 80 days. A alone can do it in 40 days. If both together can do the work in how many days?