A pipe can empty 2/3rd of a cistern in 12mins. In 6 mins, what part of the cistern will be empty? Pick one:	A) 2/3	B) 3/7	C) 4/9	D) 3/8	E) 1/3
2/3 ---- 12   ? ----- 6 ==&gt; 1/3   1/3
<result>E</result>
A pipe can empty 2/3rd of a cistern in 12mins. In 6 mins, what part of the cistern will be empty?