Akbar can finish a work in 20 days and Surya can finish the same work in 80 days. If Surya and Akbar both work together, then find the total number of days taken by them to complete the work.

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Solution

The correct option is C
16

Work done by Surya in one day = $\frac{1}{20}$

Work done by Akbar in one day = $\frac{1}{80}$

Work done by them in a day when working together = $\frac{1}{80} + \frac{1}{20}$

= $\frac{1}{16}$

Time taken by them to complete the work = 16 days

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Akbar can finish a work in 20 days and Surya can finish the same work in 80 days. If Surya and Akbar both work together, then find the total number of days taken by them to complete the work.

The correct option is C 16 Work done by Surya in one day = 120 Work done by Akbar in one day = 180 Work done by them in a day when working together =180+120 = 116 Time taken by them to complete the work = 16 days

The correct option is C
16

Work done by Surya in one day = $\frac{1}{20}$

Work done by Akbar in one day = $\frac{1}{80}$

Work done by them in a day when working together = $\frac{1}{80} + \frac{1}{20}$

= $\frac{1}{16}$

Time taken by them to complete the work = 16 days