16.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:
A. 15
B. 16
C. 18
D. 25
Answer:
Option : B
Ratio of times taken by Sakshi and Tanya = 125:100 = 5:4.
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Suppose Tanya takes x days to do the work.
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5 : 4 :: 20 : x ⇒ x =4*20/5
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Hence, Tanya takes 16 days to complete the work.
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