How many kg of rice priced at $3.6 per kg should be added to 24 kg of rice priced at $2.7 per kg in order to make 5% profit on selling the mixture at $ 3.15 per kg?
a- 16 kg
b- 12 kg
c- 10 kg
d- 8 kg

• b. 12 kg
  
  If 'x' kg of rice prices at 3.6$/kg is mixed with 24 kg. of rice priced at 2.7$/kg, then average price=
  (x*3.6 + 24*2.7)/(24+x) =3.15*100/105
  (3.6+64.8)/(24+x) =3
  On solving x=12
• 8 years agoHelpfull: Yes(21) No(4)
• if x kg price of 3.6$/kg and 24 kg of rice priced at 2.7$/kg
  so , x*3.6 + 24*2.7
  we want to find avg rate of rice price hence 100% = ( (x*3.6)+(24*2.7) )/(24+x) _____ i.
  
  we know that 5% profit , so 105% = 3.15
  so 100% =3 _________________________________________ 2.
  by 105 3.15
  100 ? by ?= (100*3.15)/105= 3
  
  so by equating ( (x*3.6)+(24*2.7) )/(24+x) =3
  x=12
• 8 years agoHelpfull: Yes(9) No(5)
• given rice $3.6/kg
  
  and (100/105)*3.15=3
  
  according to law of allegation
  
  3:6=x:24
  
  then x=12kg
  
• 8 years agoHelpfull: Yes(6) No(0)
• 89 /100
  /
  90
  /
  /
  10 1
  
  10x=22
  x=2.2 ans
• 8 years agoHelpfull: Yes(1) No(8)