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SSC GD 2024 PYQ — Question 55

SSC GD Const (English) - 24 Feb 2024 - Shift 1 • Quantitative Aptitude • Q55

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A person can complete a work alone in 90 days. In how many days will it take to complete 20 percent of the same work?

 

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Correct answer: C

Explanation

The correct answer is option 3 ​​​i.e. 18days.

According to the question 

To find out how many days it will take to complete 20 percent (which is 20100=15\frac{20}{100} = \frac{1}{5}) of the work, 

Time to complete (1 / 5) of the work = 15190\frac{\frac{1}{5}}{\frac{1}{90}} = 15×90\frac{1}{5} \times 90   = 18days

it will take 18 days to complete 20 percent of the work.