A and B together can do a piece of work in 6\frac { 2 }{ 3 } days but B alone can do it in 10 days.

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asked May 15 in Class VIII Maths by muskan15 (-3,360 points)

A and B together can do a piece of work in 6.2/3 days ; but B alone can do it in 10 days. How long will A take to do it alone ?

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1 Answer

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answered May 15 by priya12 (-12,269 points)

A and B can do the work in = 6. 2/3 days

= .20/3 days

B can       “         “            “         =  10 days

∴ (A + B)’s 1 day work = 3/20

    B’s    “         “       “      “      = 1/10

    A’s   “         “        “       “      = 3/20 – 1/10

                                                  = (3 – 2)/20 = 1/20

∴ A can do the work in = 20 days

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