If you download Photomath and scan your question it will give u the answer;)
Total $19.75
Adding 5%
Taking away 20%
1). $19.75 x 0.20(20%) = 3.95
3.95 + 19.75 = 23.7
2). $19.75 x 0.05(5%) = 0.9875
0.9875 + 23.7 = 24.6875
= 24.6875
Silver stars are worth 2 and gold stars are each worth 5