
Answer:
N = Â 44 kg
C = 60- 44 = 16 kg
Explanation:
given,
cost of nuts =  ​$2.50 per kg
cost of cereal mixture =  ​$1 per kg
so the mix price should be = $ 2.10
total amount of added weight = 60kg
  N  +  C  =  60 kg
now
 N × 2.50  +  C × 1  =  60 × 2.10
 N × 2.50  +  (60-N) × 1  =  126
   1.5 N = 126-60
      N =  44 kg
     C = 60- 44 = 16 kg