If Joe goes to lunch and his receipt shows a subtotal for his bill of $13.50 and the tax amount of $0.88 totaling a bill of $14.38. What percent sales tax was he charged? round to the nearest tenth

On monday,mrs.wise bought 3 lbs of apples at $4per lb= 4*3=$12on tuesday ,20%off and she buy 5 lbs of apples = $4-20%=3.20*5lb=$16example: other wise when she buy 5lbs on monday she have to spend 4*5=20