Mixtures & Allegations [NRA CGL (National Recruitment Agency-Combined Graduate Level) Mathematics]: Questions 1 - 5 of 8

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Question number: 1

» Mixtures & Allegations

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Question

10 kg of urad dal costing Rs. 55 per kg is mixed with 15 kg of urad dal costing Rs. 50 per kg. The average price per kg of mixed urad dal is

Choices

Choice (4)Response

a.

Rs. 70

b.

Rs. 95

c.

Rs. 52

d.

Rs. 75

Question number: 2

» Mixtures & Allegations

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MCQ▾

Question

15 kg of beans costing Rs. 80 per kg is mixed with 5 kg of beans costing Rs. 60 per kg. the average price per kg of mixed beans is

Choices

Choice (4)Response

a.

Rs. 68

b.

Rs. 95

c.

Rs. 57

d.

Rs. 75

Question number: 3

» Mixtures & Allegations

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Question

A and B are two alloys of gold and copper prepared by mixing metals in the ratios 2: 7 and 7: 11 respectively. Equal quantities of these alloys are melted to form a third alloy C. the ratio of gold and copper in the alloy C is (Paper- I)

Choices

Choice (4)Response

a.

15: 17

b.

11: 25

c.

25: 33

d.

33: 25

Question number: 4

» Mixtures & Allegations

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Question

In an alloy, the ratio of copper and zinc is 7: 3. If 1 kg of zinc is mixed in 20 kg of alloy, then the ratio of copper and zinc will be (Paper- I)

Choices

Choice (4)Response

a.

2: 3

b.

1: 2

c.

3: 2

d.

2: 1

Question number: 5

» Mixtures & Allegations

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MCQ▾

Question

A and B are two alloys of gold and copper prepared by mixing metals in the ratios 3: 7 and 7: 13 respectively. Equal quantities of these alloys are melted to form a third alloy C. the ratio of gold and copper in the alloy C is (Paper- I)

Choices

Choice (4)Response

a.

27: 13

b.

23: 18

c.

18: 23

d.

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