There is a vendor at a carnival selling bags of cotton candy. Each bag of cotton candy has the same cost. She starts each day with a certain amount of money to give change when necessary. After she sells a total of 12 bags, she has $128. After she sells a total of 20 bags, she has $160. How much does the vendor charge per bag of cotton candy?

The cost of each cotton candy bag is $4.

Step-by-step explanation:

Consider the provided information.

Let, the vendor has dollar at the starting of each day.

Let, the cost of each cotton candy bag is .

Now when she sells a total of 12 bags, she has $128.

 .....(1)

After she sells a total of 20 bags, she has $160.

 ....(2)

Subtract equation 1 from equation 2.

Hence, the cost of each cotton candy bag is $4.

step-by-step explanation:

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the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

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