the wages of labourers in a factory increased in the ratio 22:25 and there was a reduction in the labourers in the ratio 15:11. find the original wage bill if the present bill is Rs 5000

• If earlier wages were 22x and new wages are 25 x
  and
  old labours were 15 y earlier and 11 y now, then
  present wage bill = 25x*11y = 275xy = 5000; xy = 5000/275
  original wage bill = 22x*15 y = 330 xy = 330*5000/275 = Rs 6000.
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