<PRE><B>Question 824823</B>
7 people can do 1/3 of a job in 45 days.
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It will take 14 people to do 2/3 of a job in 45 days
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1 person does 2/3 of a job in {{{ 15*45 = 630 }}} days
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{{{ 15*1 = 15 }}} people do 2/3 of a job in {{{ 630/15 = 42 }}} days
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There are already 7 people working, so {{{ 15 - 7 = 8 }}}
more people are needed







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