Sakshi can do a piece of work in 25 days.Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work :	Answers:
A) 15	B) 20	C) 18	D) 25	E) 10
Solution   Ratio of times taken by Sakshi and Tanya = 125 : 100 = 5 : 4 .   Suppose Tanya taken x days to do the work.   5 : 4 : : 25 : x ⇒ x = (25x4/5) ⇒ x = 20 days.   Hence,Tanya takes 16 days is complete the work.   Answer 20
<result>B</result>
Sakshi can do a piece of work in 25 days.Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work :