Problema Solution
a store is having a scale on walnuts and chocolate chips. for 3 pounds of walnuts and 5 pounds of chocolate chips, the total cost is $24. for 9 pounds of walnuts and 7 pounds of chocolate chips, the total cost is $42. find the cost for each pound of walnuts and each pound of chocolate chips.
Answer provided by our tutors
let
x = the cost of pound of walnuts
y = the cost of pound of chocolate chips
for 3 pounds of walnuts and 5 pounds of chocolate chips, the total cost is $24:
3x + 5y = 24
for 9 pounds of walnuts and 7 pounds of chocolate chips, the total cost is $42:
9x + 7y = 42
click here to see the step by step solution of the system of equations:
3x + 5y = 24
9x + 7y = 42
by solving we find:
x = $1.75
y = $3.75
click here to see the step by step solution of the system of equations:
the cost of each pound of walnuts is $1.75.
the cost of each pound of chocolate chips is $3.75.