德望學校 – S1數學 1A Chapter 3 Algebraic Equations in 1 Unknown – CQ (13-18)

試卷答案:

1. y = -37/32
2. a) m = -126
   b) n = -20
3. 587000
4. x = 1
5. There are 24 $10-notes.
   There are 76 $20-notes.
6. x = -9/11
7. a) \(B = \dfrac{3}{2}A – 10\)
   b) \(B = \dfrac{5}{4}\)
8. Width is 10cm, height is 25cm
9. x = 6
10. a) x = 8
    b) w = 30/11
11. x = 91
12. a) x = 17
    b) y = 11
13. a) x = 0
    b) x = 21/8
14. 3x + x + (x + 30) = 100
    x = 14
    Anna’s claim is not correct.
15. a) a = -2
    b) b = 30
    c) c = 17
16. n = 16
17. Ann’s brother is 2 years old.  Ann is 6 years old.

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