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Question (31)

QN0019322

If 9 pens cost ₹45, the cost of one pen is:

(A) ₹3
(B) ₹4
(C) ₹5
(D) ₹6

Correct Answer: C

Explanation:

Cost per pen = 45 ÷ 9 = ₹5.

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Question (32)

QN0019323

A factory packs 180 boxes in 12 hours. Number of boxes packed in 20 hours is:

(A) 250
(B) 280
(C) 300
(D) 320

Correct Answer: C

Explanation:

Boxes packed = 180 × 20/12 = 300.

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Question (33)

QN0019324

If 25 students need 10 benches, then 40 students need:

(A) 14 benches
(B) 15 benches
(C) 16 benches
(D) 18 benches

Correct Answer: C

Explanation:

Benches required = 10 × 40/25 = 16.

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Question (34)

QN0019325

A cyclist travels 72 km in 4 hours. Distance covered in 7 hours at same speed is:

(A) 108 km
(B) 120 km
(C) 126 km
(D) 144 km

Correct Answer: C

Explanation:

Distance = 72 × 7/4 = 126 km.

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Question (35)

QN0019326

If 8 packets contain 96 biscuits, then 15 packets contain:

(A) 160 biscuits
(B) 170 biscuits
(C) 180 biscuits
(D) 190 biscuits

Correct Answer: C

Explanation:

Each packet has 12 biscuits, so 15 packets have 180 biscuits.

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Question (36)

QN0019327

In proportional reasoning, corresponding quantities change by:

(A) Equal differences
(B) Equal sums
(C) The same factor
(D) Different factors

Correct Answer: C

Explanation:

Proportional quantities change by the same factor.

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Question (37)

QN0019328

A worker earns ₹1800 for 6 days of work. Earnings for 15 days are:

(A) ₹3600
(B) ₹4200
(C) ₹4500
(D) ₹5000

Correct Answer: C

Explanation:

Earnings = 1800 × 15/6 = ₹4500.

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Question (38)

QN0019329

Which situation does NOT represent direct proportion?

(A) Quantity purchased and cost
(B) Distance travelled and time at constant speed
(C) Number of workers and time for same work
(D) Fuel used and distance travelled

Correct Answer: C

Explanation:

More workers reduce the time taken, so it is inverse proportion.

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Question (39)

QN0019330

If 7 m of ribbon cost ₹210, then 12 m cost:

(A) ₹300
(B) ₹330
(C) ₹360
(D) ₹420

Correct Answer: C

Explanation:

Cost per metre = ₹30, so 12 m cost ₹360.

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Question (40)

QN0019331

Proportional reasoning is mainly used to find:

(A) A missing quantity in related ratios
(B) Prime numbers
(C) Angles of polygons
(D) Areas of circles

Correct Answer: A

Explanation:

Proportional reasoning helps determine unknown quantities from proportional relationships.

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Question (31)

If 9 pens cost ₹45, the cost of one pen is:

Explanation:

Link:

Question (32)

A factory packs 180 boxes in 12 hours. Number of boxes packed in 20 hours is:

Explanation:

Link:

Question (33)

If 25 students need 10 benches, then 40 students need:

Explanation:

Link:

Question (34)

A cyclist travels 72 km in 4 hours. Distance covered in 7 hours at same speed is:

Explanation:

Link:

Question (35)

If 8 packets contain 96 biscuits, then 15 packets contain:

Explanation:

Link:

Question (36)

In proportional reasoning, corresponding quantities change by:

Explanation:

Link:

Question (37)

A worker earns ₹1800 for 6 days of work. Earnings for 15 days are:

Explanation:

Link:

Question (38)

Which situation does NOT represent direct proportion?

Explanation:

Link:

Question (39)

If 7 m of ribbon cost ₹210, then 12 m cost:

Explanation:

Link:

Question (40)

Proportional reasoning is mainly used to find:

Explanation:

Link:

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