A cookie is made of chocolate, sugar, and flour. The chocolate cost $5 per pound, the sugar cost $3 dollars per pound, and the sugar cost $2 dollars per pound. You spend $50 on 18 pounds of ingredients. Write an equation that you would use to solve this problem. Then solve the problem.
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the FLOUR cost $2 dollars per pound ???
Let x , y , z be the mass of chocolate, sugar, and flour
equations
x+y+z = 18
5x+3y+2z=50
trial and error to solve ---> many solutions
Let x , y , z be the mass of chocolate, sugar, and flour
equations
x+y+z = 18
5x+3y+2z=50
trial and error to solve ---> many solutions