- A.27
- B.15
- C.8
- D.7
- A.7折
- B.8折
- C.9折
- D.以上都不对
- A.2
- B.2.4
- C.3
- D.3.6
- A.12%
- B.13%
- C.14%
- D.15%
- A.1500
- B.950
- C.840
- D.504
- A.50%
- B.60%
- C.70%
- D.80%
- A.5.12%
- B.12.8%
- C.17.28%
- D.28.8%
- A.9.7%
- B.10.1%
- C.11.7%
- D.12.9%
- A.
- B.
- C.
- D.
- A.30%
- B.35%
- C.32%
- D.50%