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Question (21)

QN0019792

If 7 books cost ₹294, then the cost of one book is:

(A) ₹40
(B) ₹41
(C) ₹42
(D) ₹43

Correct Answer: C

Explanation:

Cost of one book = 294 ÷ 7 = ₹42.

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Question (22)

QN0019793

The value of x in 9 : 12 :: x : 20 is:

(A) 12
(B) 14
(C) 15
(D) 16

Correct Answer: C

Explanation:

x = (9×20) ÷ 12 = 15.

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Question (23)

QN0019794

A car uses 8 litres of petrol for 96 km. How much petrol is needed for 144 km?

(A) 10 litres
(B) 12 litres
(C) 14 litres
(D) 16 litres

Correct Answer: B

Explanation:

8×144 ÷ 96 = 12 litres.

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Question (24)

QN0019795

If 3 kg apples cost ₹180, then 8 kg apples cost:

(A) ₹420
(B) ₹460
(C) ₹480
(D) ₹520

Correct Answer: C

Explanation:

Cost per kg = ₹60, so 8×60 = ₹480.

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Question (25)

QN0019796

The ratio 24 : 36 reduced to lowest terms is:

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

Correct Answer: B

Explanation:

Divide both terms by 12.

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Question (26)

QN0019797

If 14 notebooks cost ₹350, then 22 notebooks cost:

(A) ₹500
(B) ₹550
(C) ₹600
(D) ₹650

Correct Answer: B

Explanation:

Cost per notebook = ₹25, so 22×25 = ₹550.

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Question (27)

QN0019798

A packet contains red and blue beads in the ratio 5 : 3. If there are 40 red beads, blue beads are:

(A) 20
(B) 22
(C) 24
(D) 28

Correct Answer: C

Explanation:

Blue beads = 40×3 ÷ 5 = 24.

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Question (28)

QN0019799

Which equation verifies proportionality of 11 : 7 and 22 : 14?

(A) 11 × 22 = 7 × 14
(B) 11 × 14 = 7 × 22
(C) 11 + 14 = 7 + 22
(D) 11 − 7 = 22 − 14

Correct Answer: B

Explanation:

Cross products are equal: 11×14 = 7×22.

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Question (29)

QN0019800

If 16 litres of paint cover 128 m², then 20 litres cover:

(A) 140 m²
(B) 150 m²
(C) 160 m²
(D) 180 m²

Correct Answer: C

Explanation:

128×20 ÷ 16 = 160 m².

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Question (30)

QN0019801

A machine produces 240 bottles in 6 hours. How many bottles will it produce in 9 hours?

(A) 300
(B) 320
(C) 340
(D) 360

Correct Answer: D

Explanation:

240×9 ÷ 6 = 360 bottles.

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Question (21)

If 7 books cost ₹294, then the cost of one book is:

Explanation:

Link:

Question (22)

The value of x in 9 : 12 :: x : 20 is:

Explanation:

Link:

Question (23)

A car uses 8 litres of petrol for 96 km. How much petrol is needed for 144 km?

Explanation:

Link:

Question (24)

If 3 kg apples cost ₹180, then 8 kg apples cost:

Explanation:

Link:

Question (25)

The ratio 24 : 36 reduced to lowest terms is:

Explanation:

Link:

Question (26)

If 14 notebooks cost ₹350, then 22 notebooks cost:

Explanation:

Link:

Question (27)

A packet contains red and blue beads in the ratio 5 : 3. If there are 40 red beads, blue beads are:

Explanation:

Link:

Question (28)

Which equation verifies proportionality of 11 : 7 and 22 : 14?

Explanation:

Link:

Question (29)

If 16 litres of paint cover 128 m², then 20 litres cover:

Explanation:

Link:

Question (30)

A machine produces 240 bottles in 6 hours. How many bottles will it produce in 9 hours?

Explanation:

Link:

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