Question

Erik has 8 sacks of flour. Some of his sacks weigh

3 pounds, and the others weigh 7 pounds. The total weight
of his flour is 36 pounds. How many 7-pound sacks does
he have?

Answer 1

Step-by-step explanation: 3 seven pound bags and 5 three pound bags

7+7+7=21. 3+3+3+3+3=15. 21+15=36

Answer 2

You take the two and make the equations

x+y=8

3x+7y=36

(x=3 pounds;y=7 pounds)

then you plug numbers in.. (v)

Explanation:

3(5)+7(3)=36

15+21=36

So you have 5, 3 pound sacks, and 3, 7 pound sacks <--ANSWER