The income of A, B and C are in the ratio 7 : 9 : 12 and theirspending are in the ratio 8 : 9 : 15. If A saves 1/4 th of the income then what is the ratio of the savings of A, B and C ?

• Income = 7x:9x:12x
  Spending = 8y:9y:15y
  Saved: 7x-8y: 9x-9y: 12x-15y
  7x-8y = 7x / 4
  y = 21x/32
  9x - 9y = 99x/32
  12x-15y = 69x/32
  Saved: 7x/4:99x/32:69x/32 = 56:99:69
  
• 9 years agoHelpfull: Yes(3) No(0)
• ans 56 : 99 :69
• 10 years agoHelpfull: Yes(1) No(0)
• Total income of A, B, C = 7x + 9x + 12x = 28x ;
  
  A spends 7x X (3/4) = (21/4)x ; A saves = 7x - (21/4)x = (7/4)x ;
  
  B spends = (9/8) X (21/4)x = (189/32)x ; B saves = 9x - (189/32)x = (99/32)x ;
  
  C spends = (15/8) X (21/4)x = (315/32)x ; C saves = 12x - (315/32)x = (69/32)x ;
  
  savings of A : B : C
  
  = (7/4)x : (99/32)x : (69/32)x
  
  = 56 : 99 : 69 .
• 9 years agoHelpfull: Yes(0) No(0)