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Question (31)

QN0019263

Which ratio has simplest form 5 : 2?

(A) 20 : 10
(B) 25 : 10
(C) 35 : 20
(D) 15 : 8

Correct Answer: B

Explanation:

25 : 10 simplifies to 5 : 2.

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Question (32)

QN0019264

If 14 : 21 :: x : 42, then x equals:

(A) 24
(B) 28
(C) 32
(D) 36

Correct Answer: B

Explanation:

Since 21 becomes 42 by multiplying by 2, 14 also becomes 28.

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Question (33)

QN0019265

The ratio 96 : 120 in simplest form is:

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

Correct Answer: B

Explanation:

Divide both terms by 24.

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Question (34)

QN0019266

Which ratio is equivalent to 6 : 11?

(A) 12 : 22
(B) 18 : 35
(C) 24 : 40
(D) 30 : 44

Correct Answer: A

Explanation:

12 : 22 simplifies to 6 : 11.

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Question (35)

QN0019267

If 3 : 5 :: x : 25, then x equals:

(A) 10
(B) 12
(C) 15
(D) 18

Correct Answer: C

Explanation:

Since 5 becomes 25 by multiplying by 5, 3 becomes 15.

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Question (36)

QN0019268

The HCF of 64 and 96 is:

(A) 8
(B) 16
(C) 24
(D) 32

Correct Answer: D

Explanation:

The greatest common factor of 64 and 96 is 32.

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Question (37)

QN0019269

Which of the following is a ratio in simplest form?

(A) 18 : 24
(B) 15 : 25
(C) 7 : 11
(D) 12 : 18

Correct Answer: C

Explanation:

The terms 7 and 11 have no common factor other than 1.

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Question (38)

QN0019270

The ratio 54 : 72 simplifies to:

(A) 2 : 3
(B) 3 : 4
(C) 4 : 5
(D) 5 : 6

Correct Answer: B

Explanation:

Divide both terms by 18 to get 3 : 4.

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Question (39)

QN0019271

Two ratios are proportional when:

(A) Their differences are equal
(B) Their sums are equal
(C) Their simplest forms are equal
(D) Their products are equal

Correct Answer: C

Explanation:

Ratios having the same simplest form are proportional.

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