The cost of 1 kg of sweets increases every year by 10%. therefore, after two years the cost of 1 kg of sweets will increased by :
a. 10%
b. 20%
c. 21%
d. 25%
e. 21%

• c. 21%
  
  let present cost = 100 Rs
  after 1 year , cost = 110 Rs
  after 2 years , cost = 110 + 10% = 121 Rs
  
  => cost increased by (121 - 100) = 21 %
• 11 years agoHelpfull: Yes(6) No(0)
• in 1st yr increased by 10%
  therefore 110%
  in 2nd yr increased by 10% i.e. 11% increase
  therefore total is 121%
  increase is 21%
  
• 11 years agoHelpfull: Yes(1) No(0)
• answer is c)21% and e)21%
  let cost of 1 kg of sweets be x
  cost increased by 10% per year
  new cost after one year=x*(110/100)=11x/10
  new cost=11x/10
  new cost after one year=(11x/10)*(110/100)=121x/100
  new cost after two year=121x/100
  percent increase=x to 121x/100
  percentage increase=((new cost-original cost)/original cost)*100
  (((121x/100)-x)/x)*100
  ((21x/100)/x)*100
  (21/100)*100
  21
  so answer is 21%
  
  
• 11 years agoHelpfull: Yes(0) No(0)
• c.21%
  let price=100
  1st yr=100+10% 0f 100=110
  2nd yr=110+10% 0f 110=110+11=121
  so total % increase in 2 yrs= 121-100=21 %
• 10 years agoHelpfull: Yes(0) No(0)