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Some ladies can do a piece of work in 12 days. Two times the number of such ladies will do half of that work in :

Some ladies can do a piece of work in 12 days. Two times the number of such ladies will do half of that      work in :

      a) 6 days          b) 4 days         c)12 days         d) 3 days
























Expl : Let x ladies can do the work in 12 days. More ladies, less days (Indirect)

      Less work, less days (direct)

      Ladies 2x : x         Work             1 : ½  

      2x : x , 1 : ½ : : 12 : y

      :. 2x * 1*y = x* ½ *12  or y = 3

     Hence the required number of days = 3
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Location: United Kingdom

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The telephone bill of a certain establishment is party fixed and partly varies as the number of calls consumed. When in a certain month 540 calls made the bill is Rs.1800. In another month 620 calls are consumed then the bill becomes Rs.2040. In another month 500 units are consumed due to more holidays. The bill for that month would be :

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