Answer:
17 links
Step-by-step explanation:
1. 13 Links and 17 links are rusted. Since we need to find out the number of links that are not rusted, we need to add 13+17.
a. 13 + 17 = 30
2. Now since we added the number of lines rusted, we now should subtract the ones rusted and the one not rusted to get the answer.
a. 47-30 = 17
FINAL ANSWER: 17
