The ratio of incomes of C and D is 3:4.the ratio of their expenditures is 4:5. Find the ratio of their savings if the savings of C is one fourths of his income?

• income of c is 3x,expenditure of c is 4y
  income of d is 4x,expenditure of d is 5y
  save ratio of c and d is now 3x-4y:4x-5y
  given that 3x-4y=1/4(3x) we get x/y is 16/9
  substituting this ratio in save ratio we get savings ratio of c and d is 12:19
  
• 12 years agoHelpfull: Yes(40) No(2)
• income of C=Ci
  Income of D=Di
  Similarly Ce, De, Cs, Ds for exp. and savings.
  
  Ci/Di=3/4
  >Di=4Ci/3
  
  Ce/De=4/5
  
  Cs=Ci/4
  
  Cs=Ci-Ce
  >Ci/4=Ci-Ce
  >Ce=3Ci/4
  
  De=5Ce/4
  therefore, De= (5*3 Ci)/(4*4)=15Ci/16
  
  Cs/Ds= (Ci/4) / {(4Ci/3)-(15Ci/16)}
  = 12/19
• 12 years agoHelpfull: Yes(8) No(4)
• income of c and d are 3x and 4x resp. and expenditure is 4y and 5y resp. and saving of c is 1/4th of income..i.e. 3x/4.
  now income-expenditure=saving...we get y=9x/16 (on substituting d values)
  so, (3x/4)/(4x-5y) put d value of y here and u'll get saving ratio as 12/19
• 12 years agoHelpfull: Yes(6) No(3)
• its 12:19
  as C is saving 1/4th not 1/3rd of his income
• 12 years agoHelpfull: Yes(3) No(2)
• ans is 4/9
  for c: 3x-4y=x/4
  for d: 4x-5y=9x/16 ( by substitute value of y from above eqn of c;)
  
  ratio = x/4 : 9x/16 = 4/9
• 12 years agoHelpfull: Yes(3) No(7)
• Let Income of C:D(3:4) are 300 : 400
  and expendiures are(4:5) 200 : 250. Bcoz C saving (1/3) means=100
  den C : D income is 300-200 : 400-250
  100 : 150 is 2 : 3 ans
• 12 years agoHelpfull: Yes(2) No(11)