Five men and nine women can do a piece of work in 10 days. Six men and twelve women can do the same work in 8 days. In how many days can three men and three women do the work?	Choose the correct choice from the following answers
A) 50 days B) 23 days C) 20 days D) 65 days E) 22 days
(5m + 9w)10 = (6m + 12w)8   =&gt; 50m + 90w = 48w + 96 w =&gt; 2m = 6w =&gt; 1m = 3w 5m + 9w = 5m + 3m = 8m   8 men can do the work in 10 days.   3m +3w 5  + 3= 
<gadget id="calculator">5  + 3</gadget>
<output>8</output>
8m   8 men can do the work in 10 days.   3m +3w= 3m + 1w = 4m   So, 4 men can do the work in (10 * 8)/4 3  + 1= 
<gadget id="calculator">3  + 1</gadget>
<output>4</output>
4m   So, 4 men can do the work in (10 * 8)/4= 
<gadget id="calculator">(10 * 8)/4</gadget>
<output>20</output>
20 days.   Answer: 20 days
<result>C</result>
Five men and nine women can do a piece of work in 10 days. Six men and twelve women can do the same work in 8 days. In how many days can three men and three women do the work?