An outlet pipe can empty 2/3 rd of a cistern in 12 minutes. In 5 minutes, what part of the cistern will be emptied? Choose the correct choice from the following answers:
A) 4/9
B) 5/18
C) 4/2
D) 4/8
E) 4/1
2/3 ---- 12   ? ----- 5 ==&gt; 5/18   Answer: 5/18
<result>B</result>
An outlet pipe can empty 2/3 rd of a cistern in 12 minutes. In 5 minutes, what part of the cistern will be emptied?