Yes :-)
3/10 = 30/100 or 30%
When you see a "%" you need to ask " a percent of what"?
Here, it's a percent of the original prize, so the discount is 20% of the original prize, that is 20% of 35.
20% is also 20/100 or 1/5, so we can calculate this like this:

so the discount is 7 dollars.
Answer:
191.1 cm^3
Step-by-step explanation:
Quadrilateras
A C
Parallel lines
A B