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Question (11)

QN0019243

The HCF used to simplify 72 : 96 is:

(A) 12
(B) 18
(C) 24
(D) 36

Correct Answer: C

Explanation:

The HCF of 72 and 96 is 24.

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Question (12)

QN0019244

Which ratio is equivalent to 4 : 5?

(A) 8 : 12
(B) 12 : 15
(C) 10 : 8
(D) 16 : 25

Correct Answer: B

Explanation:

12 : 15 simplifies to 4 : 5.

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Question (13)

QN0019245

The simplest form of 56 : 84 is:

(A) 2 : 3
(B) 3 : 2
(C) 4 : 5
(D) 5 : 7

Correct Answer: A

Explanation:

Divide both terms by 28.

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Question (14)

QN0019246

If the ratio of width to height is 5 : 4 and width is 25 cm, then height is:

(A) 15 cm
(B) 18 cm
(C) 20 cm
(D) 24 cm

Correct Answer: C

Explanation:

Height = 25 × 4/5 = 20 cm.

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Question (15)

QN0019247

Which ratio is NOT proportional to 3 : 2?

(A) 6 : 4
(B) 9 : 6
(C) 15 : 10
(D) 12 : 10

Correct Answer: D

Explanation:

12 : 10 simplifies to 6 : 5.

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Question (16)

QN0019248

The ratio 100 : 80 in simplest form is:

(A) 5 : 4
(B) 4 : 5
(C) 3 : 2
(D) 2 : 1

Correct Answer: A

Explanation:

Divide both terms by 20.

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Question (17)

QN0019249

If 18 : 24 :: x : 40, then x equals:

(A) 24
(B) 30
(C) 36
(D) 45

Correct Answer: B

Explanation:

18/24 = x/40 gives x = 30.

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Question (18)

QN0019250

Which ratio has simplest form 1 : 1?

(A) 40 : 20
(B) 35 : 35
(C) 50 : 25
(D) 18 : 9

Correct Answer: B

Explanation:

Equal terms simplify to 1 : 1.

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Question (19)

QN0019251

The ratio of 150 cm to 2 m is:

(A) 3 : 4
(B) 4 : 3
(C) 2 : 3
(D) 3 : 2

Correct Answer: A

Explanation:

Convert 2 m into 200 cm. Thus 150 : 200 = 3 : 4.

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Question (20)

QN0019252

Which ratio is equivalent to 7 : 9?

(A) 14 : 16
(B) 21 : 27
(C) 28 : 40
(D) 35 : 50

Correct Answer: B

Explanation:

21 : 27 simplifies to 7 : 9.

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