If 12 men or 20 women can do a piece of work in 54 days, then in how many days can 9 men and 12 women together do the work?
Select the correct option:
A) 30 days
B) 40 days
C) 50 days
D) 70 days
E) 80 days
B   40 days   Given that 12m = 20w =&gt; 3m = 5w   9 men + 12 women = 15 women + 12 women = 27 women   20 women can do the work in 54 days. So, 27 women can do it in   (20 * 54) /27= 
<gadget id="calculator">  (20 * 54) /27</gadget>
<output>40</output>
40 days.
<result>B</result>
If 12 men or 20 women can do a piece of work in 54 days, then in how many days can 9 men and 12 women together do the work?