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 choice from the following answers
A) 33 B) 88 C) 20 D) 99 E) 77
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?