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Question (11)

QN0019203

When two ratios have the same simplest form, they are called:

(A) Equal ratios
(B) Similar ratios
(C) Proportional ratios
(D) Linear ratios

Correct Answer: C

Explanation:

Ratios with the same simplest form are proportional.

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Question (12)

QN0019204

In a ratio a : b, the numbers a and b are called:

(A) Variables
(B) Terms
(C) Factors
(D) Constants

Correct Answer: B

Explanation:

The numbers in a ratio are called terms.

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Question (13)

QN0019205

The simplest form of 84 : 56 is:

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

Correct Answer: A

Explanation:

Divide both terms by 28.

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Question (14)

QN0019206

A rectangle of size 24 cm × 16 cm is enlarged by a factor of 3. Its new dimensions are:

(A) 48 cm × 32 cm
(B) 60 cm × 40 cm
(C) 72 cm × 48 cm
(D) 96 cm × 64 cm

Correct Answer: C

Explanation:

Multiply both dimensions by 3.

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Question (15)

QN0019207

Which ratio is proportional to 3 : 2?

(A) 12 : 10
(B) 15 : 10
(C) 16 : 12
(D) 18 : 15

Correct Answer: B

Explanation:

15 : 10 simplifies to 3 : 2.

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Question (16)

QN0019208

A picture of dimensions 50 mm × 25 mm is resized to 100 mm × 50 mm. The scale factor is:

(A) 1/2
(B) 2
(C) 3
(D) 4

Correct Answer: B

Explanation:

Both dimensions are doubled.

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Question (17)

QN0019209

Two images are similar if their corresponding dimensions are:

(A) Equal
(B) Consecutive
(C) Proportional
(D) Prime

Correct Answer: C

Explanation:

Corresponding dimensions must be proportional.

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Question (18)

QN0019210

Which ratio has simplest form 1 : 1?

(A) 30 : 15
(B) 24 : 12
(C) 40 : 40
(D) 18 : 9

Correct Answer: C

Explanation:

Equal terms simplify to 1 : 1.

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Question (19)

QN0019211

A rectangle of dimensions 30 cm × 20 cm is reduced to 15 cm × 10 cm. The scale factor is:

(A) 1/3
(B) 1/2
(C) 2
(D) 3

Correct Answer: B

Explanation:

Both dimensions are halved.

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Question (20)

QN0019212

Which image is likely to appear stretched?

(A) Width and height multiplied by 2
(B) Width doubled but height unchanged
(C) Width and height halved
(D) Width and height tripled

Correct Answer: B

Explanation:

Unequal scaling causes stretching.

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Question (11)

When two ratios have the same simplest form, they are called:

Explanation:

Link:

Question (12)

In a ratio a : b, the numbers a and b are called:

Explanation:

Link:

Question (13)

The simplest form of 84 : 56 is:

Explanation:

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Question (14)

A rectangle of size 24 cm × 16 cm is enlarged by a factor of 3. Its new dimensions are:

Explanation:

Link:

Question (15)

Which ratio is proportional to 3 : 2?

Explanation:

Link:

Question (16)

A picture of dimensions 50 mm × 25 mm is resized to 100 mm × 50 mm. The scale factor is:

Explanation:

Link:

Question (17)

Two images are similar if their corresponding dimensions are:

Explanation:

Link:

Question (18)

Which ratio has simplest form 1 : 1?

Explanation:

Link:

Question (19)

A rectangle of dimensions 30 cm × 20 cm is reduced to 15 cm × 10 cm. The scale factor is:

Explanation:

Link:

Question (20)

Which image is likely to appear stretched?

Explanation:

Link:

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