Answer:
The original price was $28.
Step-by-step explanation:
Let the original price be = x
There was 40% off on x.
So, sales price was = 
Tt was then put on clearance an additional 25% off the sale price.
Means the price now becomes: 
With the help of coupon, she got $5 off and paid no more than $7.60, so the equation becomes:

=> 
=> 
=> 
Hence, the original price of the sweater was $28.