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If q workers can paint a house in d days, how many days will

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If q workers can paint a house in d days, how many days will [#permalink] New post 08 Feb 2004, 15:28
If q workers can paint a house in d days, how many days will it take q+2 workers to paint the same house, assuming all workers paint at the same rate ?

A. d+2

B. d-2

C. q+2 / qd

D. qd / q+2

E. (qd + 2d) / q
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 [#permalink] New post 08 Feb 2004, 16:06
Is it D....

q workers * d days = Complete Work


q+2 workers * X days = Complete Work..

q workers * d days = q+2 workers * X days

X = qd/q+2

Vivek.
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"Start By Doing What Is Necessary ,Then What Is Possible & Suddenly You Will Realise That You Are Doing The Impossible"

  [#permalink] 08 Feb 2004, 16:06
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