The cost of Type 1 material is Rs. 15 per kg and Type 2 material is Rs.20 per kg. If both Type 1 and Type 2 are mixed in the ratio of 2 : 3, then what is the price per kg of the mixed variety of material?

• we know that , cheaper quantity:dearer quantity = (d-m):(m-c).
  here d=c.p of a unit quantity of dearer
  c=c.p of a unit quantity of cheaper
  m=mean price
  so, (20-m):(m-15)=2:3
  m=18 (ans)Rs. 18/kg
  
• 11 years agoHelpfull: Yes(2) No(0)
• Let we take 2 and 3 kg of type 1 & 2respectively. The total price will be 15*2 +20*3=90. And the total amount is 5kg. Hence price per kg=18rs.
• 11 years agoHelpfull: Yes(0) No(0)
• ans:18
  this ques from allegation
  20-x=2 eq1
  x-15=3 eq2
  cross multiple of both eq
  15*2 +20*3=90. And the total amount is 5kg. price pr kg=18.
  
• 11 years agoHelpfull: Yes(0) No(0)
• (15*2+20*3)5=18
• 11 years agoHelpfull: Yes(0) No(1)