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
Correct Answer: B
Solution :
Ratio of times taken by Sakshi and Tanya |
\[=125:100=5:4\] |
Suppose Tanya takes x days to do the work. |
\[5:4::20:x\]\[\Rightarrow \]\[x=\left( \frac{4\times 20}{5} \right)\] |
\[\Rightarrow \] x = 16 days |
Hence, Tanya takes 16 days to complete the work. |
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