7. A product costs L Rs/kg for the first 30kg and Q Rs/kg for each extra kg. 33 Kg of this product costs Rs 1167 and 36 Kg of this product costs Rs 1204. What is the cost of 10kg of this product?

• 33=30+3. So, the first equation will be 30L+3Q= 1167....(1)
  36=30+6. So, the second equation will be 30L+6Q= 1204....(2)
  (2)-(1) gives us 3Q=1204-1167 => Q= 12.33(approx.)
  Putting this in (1) 30L+3*12.33= 1167=> L=37.66(approx.)
  therefore 10kg of this product will cost aproxx. Rs. 376.6/-
• 12 years agoHelpfull: Yes(38) No(0)