turn all % into decimals ( ÷ 100 )
COUPON
0.5 x 3.75 = 1.875
round to the nearest hundredth: 1.90$
3.75 - 1.90 = 1.85$ NEW PRICE
DISCOUNT:
1.85 x 0.2 = 0.37
1.85 - 0.37 = 1.48$ NEW PRICE
TAX: STEP
0.1 x 1.48 = 0.148
round to the nearest hundreth = 0.50$
0.50 + 1.48 = 1.98$ NEW AND FINAL PRICE