Solution:• Convert 12.8% into its decimal form12.8 x 100 = 0.128• Multiply 0.128 to 12,564 in order to get the amount of sales tax added₱ 12,564 x 0.128 = ₱ 1,608.192• Solve for the total amount₱ 12,564 + ₱ 1,608.192 = ₱ 14,172.192The total amount to be paid is 14,172.192 Php#CarryOnLearning