15 men take 21 days of 8 hrs. each to do a piece of work. How many days of 2 hrs. each would it take for 21 women if 3 women do as much work as 2 men?
Choose the correct option:
A) 30  B) 20  C) 40  D) 60  E) 90
Let 1Man does 1unit/hr of work   15M in 21 days of 8hrs will do (15*21*8) units   3W = 2M   1W=(2/3)units/hr   21W with 2hrs a day will take   (15*21*8)/(21*2*(2/3))= 
<gadget id="calculator">  (15*21*8)/(21*2*(2/3))</gadget>
<output>90</output>
&gt; 90 Days   ANSW90R:90
<result>E</result>
15 men take 21 days of 8 hrs. each to do a piece of work. How many days of 2 hrs. each would it take for 21 women if 3 women do as much work as 2 men?