Historical......................
What subject is this for? I would say something along the lines of a career path and being happy. Where you would like to live, maybe college or kids
20% = 0.2
9 + 9 * 0.2 = 10.8 - Priya makes $ per hour.
100% - 15% = 85% = 0.85
10.8 * 0.85 = 9.18 - Siobhan makes $ per hour.
Answer: $9.18