Teja can do a piece of work in 15 days .Ravi is 20% is more efficient than sakshi. the number of days taken by Tanya to do the same piece of work is?	Choose the correct choice.
A) 17 days B) 25 days C) 12 days D) 15 days E) 20 days
The ratio of times taken by Teja and Ravi=120:100=6:5   suppose Teja takes x days to do the work.   6:5::20:x   x=(5*20)/6 work in 17 days   17 daysnswer(17 days)
<result>A</result>
Teja can do a piece of work in 15 days .Ravi is 20% is more efficient than sakshi. the number of days taken by Tanya to do the same piece of work is?