Answer:
The original price was $28.
Explanation:
Let the original price be = x
There was 40% off on x.
So, sales price was =
![x-0.40x=0.60x](https://img.qammunity.org/2020/formulas/mathematics/middle-school/l8qz9ryjsmndm3k54vu00xh8a78xksxmex.png)
Tt was then put on clearance an additional 25% off the sale price.
Means the price now becomes:
![0.60x-0.25(0.60x)=0.45x](https://img.qammunity.org/2020/formulas/mathematics/middle-school/xr3h9mymgze5wbrg2a0ql3xdgdweoz9sat.png)
With the help of coupon, she got $5 off and paid no more than $7.60, so the equation becomes:
![0.45x-5\leq 7.60](https://img.qammunity.org/2020/formulas/mathematics/middle-school/tyvdnr3w19gdgwacyvfndk6fnsj29x8sf2.png)
=>
![0.45x \leq 7.60+5](https://img.qammunity.org/2020/formulas/mathematics/middle-school/wdvcqpcdpccizznaebby9cwp6c5ckk37mb.png)
=>
![0.45x \leq 12.60](https://img.qammunity.org/2020/formulas/mathematics/middle-school/o1nr6kwt8h2x1h5go7n5k2u28xr8aigt9t.png)
=>
![x\leq 28](https://img.qammunity.org/2020/formulas/mathematics/middle-school/x9131vdwq7yndhd9akduondgl7zr2jp8r2.png)
Hence, the original price of the sweater was $28.