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Question (31)

QN0019223

If dimensions 90 mm × 60 mm are reduced by factor 1/3, the new dimensions are:

(A) 30 mm × 20 mm
(B) 45 mm × 30 mm
(C) 60 mm × 40 mm
(D) 20 mm × 15 mm

Correct Answer: A

Explanation:

Divide each dimension by 3.

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Question (32)

QN0019224

Which ratio has the same simplest form as 60 : 40?

(A) 50 : 35
(B) 75 : 50
(C) 80 : 70
(D) 100 : 90

Correct Answer: B

Explanation:

Both simplify to 3 : 2.

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Question (33)

QN0019225

If image A has ratio 3 : 2 and image B has ratio 2 : 1, the images are:

(A) Similar
(B) Congruent
(C) Not similar
(D) Equal

Correct Answer: C

Explanation:

Similar images must have the same ratio.

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Question (34)

QN0019226

The ratio of width to height of a square is:

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

Correct Answer: C

Explanation:

All sides of a square are equal.

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Question (35)

QN0019227

A 24 cm × 16 cm rectangle and a 36 cm × 24 cm rectangle are:

(A) Not proportional
(B) Similar
(C) Squares
(D) Equal in area

Correct Answer: B

Explanation:

Both have the ratio 3 : 2.

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Question (36)

QN0019228

If a rectangle's width changes by factor 2 but height changes by factor 3, the figure becomes:

(A) Similar
(B) Proportional
(C) Distorted
(D) Congruent

Correct Answer: C

Explanation:

Unequal factors change the shape.

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Question (37)

QN0019229

Which of the following has simplest ratio 3 : 2?

(A) 18 : 10
(B) 24 : 16
(C) 28 : 20
(D) 15 : 12

Correct Answer: D

Explanation:

15 : 12 simplifies to 5 : 4, so check carefully. The correct option is 24 : 16 = 3 : 2.

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Question (38)

QN0019230

The main reason why some resized images look stretched is that:

(A) Their colours change
(B) Their ratios change
(C) Their area changes
(D) Their orientation changes

Correct Answer: B

Explanation:

Changing ratios causes distortion.

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Question (39)

QN0019231

If 24 : 16 :: x : 20, then x is:

(A) 28
(B) 30
(C) 32
(D) 36

Correct Answer: B

Explanation:

24 : 16 = 3 : 2, so x = 30.

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Question (40)

QN0019232

A shape remains visually unchanged after resizing when:

(A) Only width changes
(B) Only height changes
(C) Both dimensions change proportionally
(D) Area remains same

Correct Answer: C

Explanation:

Similarity is preserved when dimensions change proportionally.

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Question (31)

If dimensions 90 mm × 60 mm are reduced by factor 1/3, the new dimensions are:

Explanation:

Link:

Question (32)

Which ratio has the same simplest form as 60 : 40?

Explanation:

Link:

Question (33)

If image A has ratio 3 : 2 and image B has ratio 2 : 1, the images are:

Explanation:

Link:

Question (34)

The ratio of width to height of a square is:

Explanation:

Link:

Question (35)

A 24 cm × 16 cm rectangle and a 36 cm × 24 cm rectangle are:

Explanation:

Link:

Question (36)

If a rectangle's width changes by factor 2 but height changes by factor 3, the figure becomes:

Explanation:

Link:

Question (37)

Which of the following has simplest ratio 3 : 2?

Explanation:

Link:

Question (38)

The main reason why some resized images look stretched is that:

Explanation:

Link:

Question (39)

If 24 : 16 :: x : 20, then x is:

Explanation:

Link:

Question (40)

A shape remains visually unchanged after resizing when:

Explanation:

Link:

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