Answer:
C. $1.80
Explanation:
Given:
MSRP of a certain item = $60
Percentage of Selling by store A = 20%
Percentage amount will be =

Sales tax = 5% on purchase price
Amount of sales tax =

Total Cost of item at Store A is MSRP of a certain item plus Percentage amount of selling the item plus Amount of Sales tax.
framing in equation form we get;
Total Cost of item at Store A =

Also Given:
Percentage of Selling by store B = 30%
Percentage amount will be =

Regular price of item at store B =

Percentage of discount of item at store B = 10% on regular price
Amount of discounted item at store B =

Now regular price of item with discount at store B will be equal to Regular price of item at store B minus Amount of discounted item.
regular price of item with discount at store B =

Sales tax = 5% on purchase price
Amount of sales tax =

Total Cost of item at Store B is regular price of item with discount at store B plus Amount of Sales tax.
framing in equation form we get;
Total Cost of item at Store B =

The result when total cost of the item at Store B is subtracted from the total cost of the item at Store A = $73.2 - $75 = $1.80.
Hence the result is $1.80.