Answer:
5
Explanation:
Total amount spent = $15
Number of chain purchased is between 4 and 9
Cost per chain is a the same (whole dollar)
Number of Chain purchased = (total cost / cost per chain)
Since the total cost = $15
The only whole number value which can divide $15 without a remainder and give a value between between 4 and 9 is 3.
Therefore, cost per chain = $3
Hence, number of chain purchased = $15 / $3
= 5