Analysis and Approaches for IBDP Maths Ebook 1 | Page 327

Exercise 82
82.1 (a) 0.05
(b) 0.6
(c) (i) 0.546
(d) 0.257
82.2 (a) 25%
(b) 75%
(c) (i) 0.4536
(d) 0.261
82.3 (a) 30%
(b) 70%
(c) (i) 0.353
(ii) 0.214
(d) (iii) 31%
82.4 (a) 10%
(b) 40%
(c) (i) 0.533
(ii) 0.2
(d) (iii) 12%
Chapter 19
Exercise 83
83.1 0.18
83.2 a � 0.6 , b � 0.2
83.3 a � 0.4 , b � 0.3 , c � 0.2
83.4 a � 0.1, b � 0.2
Exercise 84
84.1 (a) 0.05
(b) 1.45
84.2 (a)
3
10
(b) 38
84.3 (a) 3
(b) 6
84.4 (a) 1
(b)
5
2
Exercise 85
85.1 (a) (i) 0.36
(ii) 0.6
(b) (i) 0.16
(ii) 0.6
(c) Refer to solution
(d) 5.6
85.2 (a) (i) 0.06
(ii) 0.54
(b) (i) 0.48
(ii)
7
23
(c) Refer to solution
(d) 16.45
85.3 (a) (i)
7
20
(ii)
2
5
(b) (i)
1
20
(ii)
7
10
(c) Refer to solution
(d) $225
85.4 (a) (i) 0.2
(ii) 0.6
(b) (i) 0.1
(ii)
2
3
(c) Refer to solution
(d) $4.8
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