if price of t.v set is reduced by 20%, then its sale increases by 80%, find net effect on sale value

• 0.8*1.8 =1.44 means 44% increase in sale volume.
• 14 years agoHelpfull: Yes(12) No(3)
• * suppose current price is x and current sale is y.
  * now price reduce the 20% so x-(20x/100) means x-0.2x = 0.8x.
  * now sale increase the 80% s0 y+(80y/100) means y+0.8y = 1.8y.
  * now net effect on sale is 44%.
  
• 14 years agoHelpfull: Yes(10) No(3)
• formula: - a + b + ((-a)(b)/100)
  = -20+80+(-20*80)/100
  = -20+80-16
  =44
• 10 years agoHelpfull: Yes(10) No(0)