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Mathematics

A can do a piece of work in 2 days and B can do the same work in 3 days. If A and B work together, the amount of work done by them in 1 day is:

  1. 30

  2. 1.5

  3. 23\dfrac{2}{3}

  4. 56\dfrac{5}{6}

Direct & Inverse Variations

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Answer

A's 1 day work = 12\dfrac{1}{2}

B's 1 day work = 13\dfrac{1}{3}

(A + B)'s 1 day work = 12+13\dfrac{1}{2} + \dfrac{1}{3}

= 3+26\dfrac{3 + 2}{6}

= 56\dfrac{5}{6}

Hence, option 4 is the correct option.

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