The price of an article is reduced by 25% and its daily sale is increased by 30%. Find the net effect on the daily sale receipts?

• 2.5% decrease
  
  Let initial price=100 and sale=100, then sale receipt=100*100=10000
  New price=75, sale=130 and sale receipt=75*130=9750
  So there is a decrease in sale receipt and % of decrease=[(10000 - 750)/10000]*100=2.5%
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