Question 159623
"a 9-lb mixture of peanuts, cashews, and raisins"  __  p+c+r=9


" twice as much peanuts than cashews"  __  p=2c


"The total cost of the mixture is $13.00"  __  1.5p+2c+1r=13





substituting  __  (2c)+c+r=9  __  3c+r=9  __  r=9-3c


substituting  __  1.5(2c)+2c+9-3c=13  __  2c=4  __  c=2


substituting  __  p=2(2)  __  p=4


substituting  __  r=9-3(2)  __  r=3