Question

Diego bought some raisins and walnuts to make trail mix.

Raisins cost $4 a pound and walnuts cost $8 a pound. Diego spent $15 on both ingredients.

Decide if each pair of values could be a combination of raisins and walnuts that Diego bought.



4 pounds of raisins and 2 pounds of walnuts

Answer 1

4 pounds of raisins and 2 pounds of walnuts is not a solution to this equation.

Explanation:

4y+8x=15

4(4)+8(2)=?

4(4)=16

8(2)=16

16+16=32

Therefore, 4 pounds of raisins and 2 pounds of walnuts is not a possible solution for the constraints of the eqution.

Answer 2

Answer: You could only buy 1 pound of raisins and 1 pound of walnuts

Explanation:

$8=1 pound of walnuts

$15-$8=$7

$4=1 pound of raisins

$7-$4=$3

$3 is not enough to buy a pound of raisins since it’s one dollar off but it is also not enough to buy a pound of walnuts because it’s off by $5