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