Popular Science Australia - 01.04.2018

#18

CONTINUED ON PAGE 44

IBM

5

8

] Adrian buys
cooter for
,600 and
nds $500 on
airing it.
he sells the
oter for
,000, what
his profit
rgin?
6 percent
21 percent
18 percent
7 percent

[2] Present ages

of John and Mandy

are in the ratio

of 7:5 respec-

tively. Four

years later, the

ratio of their

ages will become

15:11. What is

John’s present

age in years?

A. 52 years

B. 14 years

C. 56 years

D. 63 years

[3] In a lottery,

tickets numbered

1 to 20 are

balloted. What

is the probabil-

ity that the

ticket drawn has

a number that is

a multiple of 3

or 5?

A. 0.7

B. 0.25

C. 0.82

D. 0.45

Questions 4-6:

Select the

number that best

completes the

sequence.

[4] 4, 2, -4, -8,

32, 26, -15,?

A. -3

B. -42

C. -32

D. -23

[5] 2, 9, 5, 49,

11, 169,?

A. 29

B. 21

C. 17

D. 19

[6] 2, 13, 2, 4,

8, 3, 8, 3, 5,

16,?

A. 3

B. -2

C. -1

D. 4

A

E

B

F

B

F

C

G

C

G

D

H

D

H

[SPRING 2018]