After working for 6 days, Ashok finds that only 1/3 rd of the work has been done. He employs Ravi who is 60% as efficient as Ashok. How many days more would Ravi take to complete the work?	Choose the correct option
A) 27 B) 28 C) 20 D) 24 E) 12
1/3 ---- 6   1 -------? A = 18   R = 1/18 * 60/100 = 1/30   1 ----- 1/30   2/3 ----? =&gt; 20 days   Answer:20
<result>C</result>
After working for 6 days, Ashok finds that only 1/3 rd of the work has been done. He employs Ravi who is 60% as efficient as Ashok. How many days more would Ravi take to complete the work?