Answer:
15% discount
Step-by-step explanation:
200 x .15 is 30 which means that you save 5 dollars more when using that discount rather than just 25.
The Greates Common Factor (GCF) is: 3 x 5 = 15
19
12-n/7 = -1
Cross multiply
We have 12-n = -7
Collect like terms
12 + 7 = n
Therefore n = 19