Answer:
10.84 pounds
Step-by-step explanation:
When both balls are placed on the scale, the total weight is found by adding the weights together:
Purple ball weight: 7.67 pounds
Orange ball weight: 3.17 pounds
Adding these together:
7.67 + 3.17 = 10.84 pounds
Therefore, the scale will read 10.84 pounds when both balls are placed on it simultaneously.