A completes a work in 12 days and B complete the same work in 24 days. If both of them work together, then the number of days required to complete the work will be?  Choose the correct option:
A) 8 days	B) 11 days	C) 21 days	D) 22 days	E) 24 days
If A can complete a work in x days and B can complete the same work in y days, then, both   of them together can complete the work in x y/ x+ y days   Therefore, here, the required number of days = 12 × 24/ 36 = 8 days.   Option '8 days'
<result>A</result>
A completes a work in 12 days and B complete the same work in 24 days. If both of them work together, then the number of days required to complete the work will be?