Martin finds a shirt on sale for 10% of at a departnment store. the original price was $20. martin must also pay 8.5% tax. how much is the shirt before taxes are applied

Orla and eduardo each looked at a strand of their hair under a microscope and measured the diameter. orla's strand was 0.005\,\text{cm}0.005cm in diameter, and eduardo's strand was 0.012\,\text{cm}0.012cm in diameter.