德望學校 – S3數學 3A Chapter 2 Percentages II – CQ (13-18)

試卷答案:

1. She should choose bank A.
2. a) $5790 (cor. to 3 sig. fig.)
   b) $15400 (cor. to 3 sig. fig.)
3. -18.2%
4. 1160000
5. a) $200
   b) $7070
6. 15.25%
7. $23300 (cor. to 3 sig. fig.)
8. a) 3 : 2
   b) 1236
9. a) $2020
   b)5
10. a) $2018
    b) 8
11. a) $145200
    b)$73116
12. a) $207900
    b i) $1250
      ii) $1231
13. a) 483
    b) Yes, I agree.
14. 3.66
15. +25%
16. $72000
17. a) $4423.68
    b) $1000
18. a) 74263
    b) -0.2754%
19. a) $137600
    b) x > 1620000
20. a) $10001
    b) Miss Mak will receive more interest.
21. 5.06%
22. $60300
23. $8640
24. John should deposit his money in bank B.
25. $17500
26. a) She should choose plan A.
    b) I don’t agree.
27. $4584
28. a) $2890
    b( $5800
29. x < 35000
30. a) $50500
    b) No, I do not agree with her.
31. Mrs Chan should choose plan A.
32. $16750

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