Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 7): Questions 80 - 86 of 122

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Question number: 80

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A boat covers a certain distance downstream in 2 hour, while it comes back in 1Equation hours. If the speed of the stream be 3 kmph, what is the speed of the boat in still water?

Choices

Choice (4) Response

a.

15 kmps

b.

8 kmps

c.

11 kmps

d.

13 kmps

Question number: 81

» Mental Ability » Basic Arithmetic

MCQ▾

Question

If each side of a square is doubled, its area

Choices

Choice (4) Response

a.

Becomes 8 times

b.

Becomes 6 times

c.

Becomes 4 times

d.

Is doubled

Question number: 82

» Mental Ability » Basic Arithmetic

MCQ▾

Question

What percent of Equation is Equation ?

Choices

Choice (4) Response

a.

2.5%

b.

25%

c.

0.4%

d.

6.6%

Question number: 83

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The average age of 30 children in a class is 10 years. If the teacher’s age is included, the average age becomes 12 years. Find the teacher’s age.

Choices

Choice (4) Response

a.

42

b.

72

c.

35

d.

45

Question number: 84

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Equation

Choices

Choice (4) Response

a.

2190

b.

19418

c.

5012.5

d.

19578

Question number: 85

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A, B, C subscribe Rs. 60, 000 for a business. A subscribes Rs. 4000 more than B and B Rs. 3000 more than C. Then C’s share is________.

Choices

Choice (4) Response

a.

Rs. 8400

b.

Rs. 11, 900

c.

Rs. 13, 600.50

d.

Rs. 16, 666.66

Question number: 86

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A train 200 m long is running at a speed of Equation In what time will it pass a bridge 100 m long?

Choices

Choice (4) Response

a.

45.55 sec

b.

43.5 sec

c.

42.30 sec

d.

40.13 sec

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