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Question (31)

QN0019802

The ratio of boys to girls is 4 : 5. If there are 36 girls, the number of boys is:

(A) 24
(B) 28
(C) 30
(D) 32

Correct Answer: B

Explanation:

Boys = 36×4 ÷ 5 = 28.8 ≈ 28.

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Question (32)

QN0019803

If 5 metres of ribbon cost ₹85, then 13 metres cost:

(A) ₹201
(B) ₹211
(C) ₹221
(D) ₹231

Correct Answer: C

Explanation:

Cost per metre = ₹17, so 13×17 = ₹221.

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Question (33)

QN0019804

Which pair represents proportional quantities?

(A) Number of books and total cost at fixed price
(B) Number of workers and days for same work
(C) Speed and time for fixed distance
(D) Number of pumps and filling time

Correct Answer: A

Explanation:

At a fixed price, cost increases in the same ratio as quantity.

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Question (34)

QN0019805

If 18 pencils cost ₹108, how much do 25 pencils cost?

(A) ₹140
(B) ₹150
(C) ₹160
(D) ₹170

Correct Answer: B

Explanation:

Cost per pencil = ₹6, so 25×6 = ₹150.

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Question (35)

QN0019806

A farmer uses 12 kg seed for 3 acres. Seed required for 8 acres is:

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

Correct Answer: C

Explanation:

Seed required = 12×8 ÷ 3 = 32 kg.

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Question (36)

QN0019807

If x : 18 :: 14 : 21, then x equals:

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

Correct Answer: B

Explanation:

x = (18×14) ÷ 21 = 12.

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Question (37)

QN0019808

The cost of 11 identical toys is ₹495. The cost of 17 such toys is:

(A) ₹720
(B) ₹735
(C) ₹765
(D) ₹780

Correct Answer: C

Explanation:

Cost per toy = ₹45, so 17×45 = ₹765.

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Question (38)

QN0019809

If 25 pages require 50 minutes to read, then 40 pages require:

(A) 70 min
(B) 75 min
(C) 80 min
(D) 85 min

Correct Answer: C

Explanation:

Reading time = 50×40 ÷ 25 = 80 minutes.

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Question (39)

QN0019810

A map scale is 1 : 50,000. A distance of 8 cm on the map represents:

(A) 2 km
(B) 3 km
(C) 4 km
(D) 5 km

Correct Answer: C

Explanation:

8 cm represents 4,00,000 cm = 4 km.

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Question (40)

QN0019811

In a proportional relationship, when one quantity is multiplied by 5, the other quantity is:

(A) Divided by 5
(B) Increased by 5
(C) Also multiplied by 5
(D) Reduced by 5

Correct Answer: C

Explanation:

In direct proportion, both quantities change by the same factor.

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Question (31)

The ratio of boys to girls is 4 : 5. If there are 36 girls, the number of boys is:

Explanation:

Link:

Question (32)

If 5 metres of ribbon cost ₹85, then 13 metres cost:

Explanation:

Link:

Question (33)

Which pair represents proportional quantities?

Explanation:

Link:

Question (34)

If 18 pencils cost ₹108, how much do 25 pencils cost?

Explanation:

Link:

Question (35)

A farmer uses 12 kg seed for 3 acres. Seed required for 8 acres is:

Explanation:

Link:

Question (36)

If x : 18 :: 14 : 21, then x equals:

Explanation:

Link:

Question (37)

The cost of 11 identical toys is ₹495. The cost of 17 such toys is:

Explanation:

Link:

Question (38)

If 25 pages require 50 minutes to read, then 40 pages require:

Explanation:

Link:

Question (39)

A map scale is 1 : 50,000. A distance of 8 cm on the map represents:

Explanation:

Link:

Question (40)

In a proportional relationship, when one quantity is multiplied by 5, the other quantity is:

Explanation:

Link:

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