8/14/2019 2009 RV EM P1 Solutions

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2009 RVHS Prelim Maths (4016) Paper 1 Answer Key

1(a) 3.17 x 10-1, (b) 4.21 x 109

2(a) x = 60, (b) 40 children

3(a)

38

27

x

, (b) k =

1

4 2

4(a) 0938, (b) 1509

5(a) $160, (b)2

147

%

6. 44 cm

7(a)2

3, (b) 4.0 x 106

8(a) c = 1, (b) m =1

2

9(b)(i)9

40 , (ii)40

41

10(a)6.6

14.1

, (b) It means that the cost of package A is $6.60 while that of B is $14.10

11(b) 4

12.3

4

rT

r

13(a)800

yx

, (b)1

333

%

14(a)7, (b) 2, (c) 40%15(a) ( 2 )(3 4 ) p q x y , (b) 24x

16(a) 18 sides, (b) 9 sides

17(a) 12:45 pm, (b) 480 = 25 x 3 x 5, 576 = 26 x 32, n = 6

18(a) k =4, (b) x = 3, y = 1

19(a) 2:3, (b) 202.5 cm2, (c) $45

20(a)(i)2n, (ii) 4n, (iii) 4(m n), (b) 2(2m + n), UV= 25

SU

.

21(a)(ii) x = 13

4

, (b)(ii) (3, 1)

22(a)3

2v x , (b) 30 s, (c) 675 m

23(b) 082, (c) 12400 m2