Sakshi can do a piece of work in 10 days.Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work :  Options:
A) 8
B) 16
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 : : 10 : x ⇒ x = (10x4/5) ⇒ x = 8 days.   Hence,Tanya takes 8 days is complete the work.   8nswer 8
<result>A</result>
Sakshi can do a piece of work in 10 days.Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work :