The price of sugar is increased by 20%. As a result, a family decreases its consumption by 25%. The expenditure of the family on sugar will be decreased by :

a. 10%
b. 5%
c. 14%
d. 15%

• Let price of sugar be 100 and consumption be 100
  original expenditure=price*quantity
  =100*100
  =10000
  New expenditure=120*75
  =9000
  decrease in expenditure=[(10000-9000)/10000]*100
  =10%
• 8 years agoHelpfull: Yes(6) No(1)
• Answer is a)10 I got a trick to to solve the problem like this x+y+(xy/100) And x and y both are sign sensetive. Put here x=+20 And y=- 25 Abd calculate
• 9 years agoHelpfull: Yes(3) No(2)
• let us assume the family uses 1kg of sugar which costs 100/-.
  then their expenditure is 100/-.
  Now they buy 0.75kg for the amount of 120/- per kg. so, The expenditure is 90/-.
  % decrease in expenditure is 10%.
• 7 years agoHelpfull: Yes(1) No(0)
• Price *consumption =expenditure
  20% =1/5
  25% =1/4
  So that
  5*4=20
  6*3=18
  So {2/20}*100=10%
• 6 years agoHelpfull: Yes(1) No(0)