Answer:
1 bag of screw bag cost $5, which is the required relation between the screw bags and the price of bag.
Explanation:
We are given the following information in the question:
Bags of screw: 2 4 7
Price($): 10 20 35
In order to find a relationship between the number of bags and price, we find the ration of numbers of bags to price of bags.

This ratio can be written as 1:5 and read as 1 bag cost $5.
Hence, 1 bag of screw bag cost $5, which is the required relation between the screw bags and the price of bag.