SOLUTION: A store is having a sale on chocolate chips and walnuts. For 4 pounds of chocolate chips and 8 pounds of walnuts, the total cost is $25. For 2 pounds of chocolate chips and 3 pound

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A store is having a sale on chocolate chips and walnuts. For 4 pounds of chocolate chips and 8 pounds of walnuts, the total cost is $25. For 2 pounds of chocolate chips and 3 pound      Log On


   

Question 1193645: A store is having a sale on chocolate chips and walnuts. For 4 pounds of chocolate chips and 8 pounds of walnuts, the total cost is $25. For 2 pounds of chocolate chips and 3 pounds of walnuts, the total cost is $11. Find the cost for each pound of chocolate chips and each pound of walnuts.
Found 2 solutions by Boreal, josgarithmetic:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
4C+8W=25
2C+3W=11 ;multiply this by -2 and add to the top to eliminate C.
-4C-6W=-22
2W=3
W=$1.50
C=$3.25
where W is walnuts and C chocolate chips.

Answer by josgarithmetic(39626) About Me  (Show Source):
You can put this solution on YOUR website!
PRICE per pound:
c, the chocolate chips
w, the walnuts

system%284c%2B8w=25%2C2c%2B3w=11%29

You might choose Elimination Method, and multiply the second equation by 2:
system%284c%2B8w=25%2C4c%2B6w=22%29
Subtract second equation from first equation, and see 2w=3;
w=1.5
.
.