Two ways:
- put all 3 girls on the right scale and it will overload it.
- Through trial and error, I used the “left scale under minimum weight message” to get the left side to exactly 450 pounds. Once I got the message “scales don’t match” I knew what boxes to put on the left and then work my way from there.
To give a rough estimate, I think I put like around 3 50 boxes and one 25 on the left to get it to 450.