Answer:
n = 13
Step-by-step explanation:
n - 26 = -13
+26 +26
If you want to know what b is then it is 16
38 + b = 54
54- 38 = 16
38 + 16= 54
85% = 0.85
1-0.85 = 0.15
80 x 0.15 = 12
the price now is $12