Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 7): Questions 52 - 57 of 122

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Question number: 52

» Mental Ability » Basic Arithmetic

MCQ▾

Question

An ore contain 8 % copper. How many kilograms of the ore are required to get 68 kg of copper?

Choices

Choice (4) Response

a.

85 kg

b.

850 kg

c.

544 kg

d.

5.44 kg

Question number: 53

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The cost of cultivating a square field at the rate of rupees 360 per hectare is rupees 3240. What is the cost of putting a fence around it at 75 paise per meter?

Choices

Choice (4) Response

a.

600 rupees

b.

900 rupees

c.

700 rupees

d.

800 rupees

Question number: 54

» Mental Ability » Basic Arithmetic

MCQ▾

Question

If 30 men working 8 hours a day can do a piece of work in 15 days, in how days will 15 men working for 7 hours a day to do the same piece of work?

Choices

Choice (4) Response

a.

55 days

b.

34.28 days

c.

30 days

d.

12 days

Question number: 55

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A train 600 meters long is running at a speed of Equation If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is.

Choices

Choice (4) Response

a.

500

b.

130

c.

300

d.

360

Question number: 56

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A cistern can be filled by two tapes A and B in 5 hours and 8 hours respectively. How much time will the cistern be filled up completely?

Choices

Choice (4) Response

a.

3.08 hours

b.

24 hours

c.

48 hours

d.

3.6 hours

Question number: 57

» Mental Ability » Basic Arithmetic

MCQ▾

Question

8 children and 12 men completed a certain piece of work in 9 days. Each children takes twice the time taken by a man to finish the work. In how many days will 12 men finish the same work?

Choices

Choice (4) Response

a.

9

b.

12

c.

8

d.

15

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