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 Testimonial
Dear Wadehra Bhai,
You have done 79ers proud. While congratulating you on this occasion let me say that by tagging ourselves (79ers)with you as a fellow 79er, we too have become "smart scholars". Smart way of snatching some credit you say?
Ram Prabhu (grp_pabbas@rediffmail.com) SBT 1979er
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Home » Brain Teasers » The Smart Scholar Method
 Puzzle # 12 Easy Method > Gender Benders
Easy does it! The Smart Scholar Method
If (M/m + W/w) = P and (1/m – 1/w) = Q, we can write 15*(M/m + W/w) = 12*[(M + 1)/m + (W – 1)/w] as 15*P = 12*(P + Q) or P = 4*Q.
If (M + 2) men and (W – 2) women take n days to complete the work, n*[(M + 2)/m + (W – 2)/w] = 15*(M/m + W/w) or n*(P + 2*Q) = 15*P. That is, n = 15*P/(P + 2*Q) = 15*4*Q/(4Q + 2Q) = 10.
Thus 10 days is the answer.
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