How many kilogram of sugar costing Rs. 9 per kg must be mixed with 27 kg of sugar costing Rs. 7 per kg so that there may be a gain of 10% by selling the mixture at Rs. 9.24 per kg?
A. 36 kg B. 42 kg
C. 54 kg D. 63 kg

• 27*7=189
  63*9=567
  --------------
  original cost=189+567=>756
  total mixture =90 i.e 63+27
  for profit sold 9.24 per kg=>90*9.24=831.6
  profit%=((sp-cp)/cp)*100
  p%=((831.6-756)/756)*100
• 9 years agoHelpfull: Yes(2) No(0)
• Ans-D. 63kg
  
  s.p of 1 kg mixture=9.24,gain=10%
  c.p of 1 kg mixture=(100/110)*9.24=8.4rs=840paisa
  (c.p of 1st
  type suger)
  900 700(c.p of 2nd type suger)
  /
  840(mean price)
  /
  140 60
  sugar of 1st kind : sugar of 2nd kind= 60 : 140=3 : 7
  let x kg of sugar of 1st kind be mixed with 27kg of 2nd kind.
  then, 3 : 7 = x : 27 or x=63kg(ans)
  
• 9 years agoHelpfull: Yes(2) No(1)
• 11.57kg
  
  s.p of 1 kg mixture=9.24,gain=10%
  c.p of 1 kg mixture=(100/110)*9.24=8.4rs=840paisa
  (c.p of 1st
  type suger)
  900 700(c.p of 2nd type suger)
  /
  840(mean price)
  /
  140 60
  sugar of 1st kind : sugar of 2nd kind= 60 : 140=3 : 7
  let x kg of sugar of 1st kind be mixed with 27kg of 2nd kind.
  then, 3 : 7 = x : 27 or x=11.57kg(ans)
• 8 years agoHelpfull: Yes(0) No(0)