Math 9 tricky percentages and adding question driving me crazy!! please help?

She earns $291. 5% is 14.55, so she still has 276.45 to spend. The CDs end up totaling at 27.447, or 27.45. Jeans are 151.20. 40% of 193 is 77.2, plus gst is 81.06. 12 dollar lunch. That is 27.45+151.20+81.06+12=271.71. She still has $4.74