Question : Raman is 25% more efficient than Aman. If Aman can complete a piece of work in 25 days, Raman can complete the same work in how many days?
Option 1: 12
Option 2: 15
Option 3: 16
Option 4: 20
Correct Answer: 20
Solution :
Let Aman be 100% efficient.
Then Raman will be 125% efficient.
Now, 100% efficient can do work in 25 days,
1% efficient will do work in $25 \times 100$ days.
$\therefore$ 125% efficient can do work in $\frac{25 \times 100}{125}$ = 20 days
Hence, the correct answer is 20.
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