Sakshi can do a piece of work in 20 days. Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work is:  Pick one
A) 15 B) 16 C) 22 D) 18 E) 25
Work done by Sakshi in 1 day = 1/20   Since Tanya is 25% efficient than Sakshi, she completes 25% more work in a day than Sakshi.   =&gt; Tanya's 1 day work = 1/20 + 1/20 * 25/100 = 1/16   So time taken by Tanya to finish the work = 16 days answer : 16
<result>B</result>
Sakshi can do a piece of work in 20 days. Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work is: