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Question (21)

QN0019872

A mixture has milk : water : cream = 5 : 2 : 1. If cream is 4 L, milk is:

(A) 10 L
(B) 15 L
(C) 20 L
(D) 25 L

Correct Answer: C

Explanation:

Scale factor = 4, so milk = 5×4 = 20 L.

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Question (22)

QN0019873

If the ratio of three numbers is 2 : 4 : 6 and the first number is 10, then the sum of all three numbers is:

(A) 40
(B) 50
(C) 60
(D) 70

Correct Answer: C

Explanation:

Scale factor = 5; numbers are 10, 20, 30. Sum = 60.

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Question (23)

QN0019874

If red : blue : green = 3 : 5 : 7 and red is 18, green is:

(A) 30
(B) 36
(C) 42
(D) 48

Correct Answer: C

Explanation:

Scale factor = 6, so green = 7×6 = 42.

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Question (24)

QN0019875

A chemical solution contains A : B : C = 4 : 3 : 2. If A = 20 mL, then B =

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

Correct Answer: C

Explanation:

Scale factor = 5, so B = 3×5 = 15 mL.

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Question (25)

QN0019876

If 9 : 12 : 15 :: 3 : 4 : x, then x =

(A) 4
(B) 5
(C) 6
(D) 7

Correct Answer: B

Explanation:

Divide each term by 3; x = 5.

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Question (26)

QN0019877

A paint mixture has red : blue : white = 1 : 2 : 3. If blue paint is 14 L, white paint is:

(A) 18 L
(B) 20 L
(C) 21 L
(D) 24 L

Correct Answer: C

Explanation:

Scale factor = 7, so white paint = 3×7 = 21 L.

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Question (27)

QN0019878

Which ratio is equivalent to 3 : 6 : 9 : 12?

(A) 1 : 2 : 3 : 4
(B) 2 : 3 : 4 : 5
(C) 3 : 4 : 5 : 6
(D) 1 : 3 : 5 : 7

Correct Answer: A

Explanation:

Divide all terms by 3.

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Question (28)

QN0019879

A basket contains apples : mangoes : oranges = 2 : 3 : 4. If apples are 16, oranges are:

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

Correct Answer: C

Explanation:

Scale factor = 8, so oranges = 4×8 = 32.

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Question (29)

QN0019880

If 4 : 5 : 6 :: 12 : 15 : x, then x =

(A) 16
(B) 18
(C) 20
(D) 24

Correct Answer: B

Explanation:

Scale factor = 3, so x = 6×3 = 18.

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Question (30)

QN0019881

A team has batsmen : bowlers : all-rounders = 5 : 4 : 2. If bowlers are 12, all-rounders are:

(A) 4
(B) 5
(C) 6
(D) 8

Correct Answer: C

Explanation:

Scale factor = 3, so all-rounders = 2×3 = 6.

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Question (21)

A mixture has milk : water : cream = 5 : 2 : 1. If cream is 4 L, milk is:

Explanation:

Link:

Question (22)

If the ratio of three numbers is 2 : 4 : 6 and the first number is 10, then the sum of all three numbers is:

Explanation:

Link:

Question (23)

If red : blue : green = 3 : 5 : 7 and red is 18, green is:

Explanation:

Link:

Question (24)

A chemical solution contains A : B : C = 4 : 3 : 2. If A = 20 mL, then B =

Explanation:

Link:

Question (25)

If 9 : 12 : 15 :: 3 : 4 : x, then x =

Explanation:

Link:

Question (26)

A paint mixture has red : blue : white = 1 : 2 : 3. If blue paint is 14 L, white paint is:

Explanation:

Link:

Question (27)

Which ratio is equivalent to 3 : 6 : 9 : 12?

Explanation:

Link:

Question (28)

A basket contains apples : mangoes : oranges = 2 : 3 : 4. If apples are 16, oranges are:

Explanation:

Link:

Question (29)

If 4 : 5 : 6 :: 12 : 15 : x, then x =

Explanation:

Link:

Question (30)

A team has batsmen : bowlers : all-rounders = 5 : 4 : 2. If bowlers are 12, all-rounders are:

Explanation:

Link:

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