A man spends 75% of his income, when his income is increased by 20%, he increases his expenditure by 10%. By how much per cent are his savings increased

• Let income = 100, exp = 75, sav = 25
  Now, New income = 100 + 20%(100) = 120
  New Exp. = 75 + 10%(75) = 82.5
  New Sav. = 120 - 82.5 = 37.5
  % increase in savings = (12.5/50)x100 = 50%
• 10 years agoHelpfull: Yes(12) No(3)
• 50%
• 14 years agoHelpfull: Yes(8) No(4)
• INCOME1=100 ,EXPENDITURE1 =75 SAVING1=25
  INCOME2=120,EXPENDITURE2=82.5,SAVING2=37.5
  DIFFERENCE IN SAVING=37.5-25=12.5(+VE)
  % INCREASE IN SAVING=50%
• 9 years agoHelpfull: Yes(4) No(0)
• Let income = 100, expenditure = 75
  
  as income=savings + expenditure
  also, savings=income - expenditure
  therefore, initial savings = 100 - 75 = 25
  
  Now, New income = 100 + 20%(100) = 120
  New Exp. = 75 + 10%(75) = 82.5
  New Sav. = 120 - 82.5 = 37.5
  
  Increase in savings = new savings - initial savings = 37.5 - 25 = 12.5
  % increase in savings = (12.5/25)x100 = (25/50)x100 = 50%
  
  ps: I just took note from other's answers and expanded it for clear calculations. hope this helps. and thanks others who answered as I was finding ans for this qn as well.
• 5 years agoHelpfull: Yes(3) No(0)
• get decreased by 28%
• 14 years agoHelpfull: Yes(0) No(7)
• i din understand the last step sir
• 6 years agoHelpfull: Yes(0) No(1)