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SSC Selection Post 2022 PYQ — Question 72

SSC Selection Post - Higher Secondary Level 2022 - 16 March 2022 - Shift 3 • Quantitative Aptitude • Q72

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A can complete one-fourth of a work in 2 days and B can complete three-fifth of the same work in 6 days. In how many days will they complete the work if they work together?

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Correct answer: C

Explanation

The correct answer is option 3 i.e. 4494{{4} \over 9}.

Time taken by A to complete the work = 8 days

Time taken by B to complete the work = 10 days

Work completed in 1 days by A and B together = (1/8) + (1/10)

⇒ 9/40 

Time taken by A and B together to complete the work = 40/9 = 4494{{4} \over 9}