A work can be completed by 12 boys in 24 days and 12 girls in 12 days. In how many days would the 6 boys and 6 girls working together complete the work? Choose the correct choice from the following answers:	A) 12	B) 18	C) 16	D) 20	E) 24
In 1 day, 12 boys does 1/24 of the total work.   =&gt; In 1 day, 1 boy does 1/(24*12) of the total work   =&gt; In 1 days, 6 boys do 6/(24*12) = 1/48 of the total work   In 1 day, 12 girls do 1/12 of the total work.   =&gt; In 1 day, 1 girl does 1/(12*12) of the total work   =&gt; In 1 day, 6 girls do 6/(12*12) = 1/24 of the total work   In 1 day, 6 boys and 6 girls do 1/48 + 1/24 of the total work   =&gt; In 1 days, 6 boys and 6 girls do 3/48= 1/16 of the total work   So, 6 boys and 6 girls complete all work in 16 days.   Hence, the answer is 16
<result>C</result>
A work can be completed by 12 boys in 24 days and 12 girls in 12 days. In how many days would the 6 boys and 6 girls working together complete the work?