If 10 litres of an oil of Rs.50 per litres be mixed with 5 litres of another oil of Rs.66 per litre then what is the rate of mixed oil per litre?

a) Rs.49.17
b) Rs.51.03
c) Rs.54.17
d) Rs.55.33
e) None of the above

• ans D) 55.33
  50*10 = 500
  66*5 = 330
  830/15 = 55.33
• 8 years agoHelpfull: Yes(7) No(0)
• ans D) 55.33
  50*10 = 500
  66*5 = 330
  (500+330)/(10+5)
  830/15 = 55.33
• 8 years agoHelpfull: Yes(3) No(0)
• Unit Price of Cheapest(c) Unit Price of Dearer (d)
  50 66
  
  m
  66-m m-50
  
  Quantity of cheaper/Quantity of cheaper = (d-m)/(m-c)
  10/5 = (66-m)/(m-50)
  3*m = 166
  m = 55.33
  
  Option - d is correct
  
• 8 years agoHelpfull: Yes(3) No(0)
• (d)
  10 ->50ruppes
  5 -> 66 ruppes
  (50*10 + 66*5)/15 = 55.33
• 8 years agoHelpfull: Yes(1) No(0)