Question : A alone can complete a work in 40 days. 20 percent of the same work will be completed by A in how many days?
Option 1: 8 days
Option 2: 10 days
Option 3: 5 days
Option 4: 6 days
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Correct Answer: 8 days
Solution :
Given: A alone can complete a work in 40 days.
We know that 20% = $\frac{1}{5}$
$\therefore \frac{1}{5}$ part of work is done in $\frac{1}{5}\times 40 = 8$ days
Hence, the correct answer is 8 days.
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