Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 7): Questions 99 - 105 of 122

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Question number: 99

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Two cubes have volumes in the ratio 1: 125. Then the ratio of their sides is

Choices

Choice (4) Response

a.

1: 18

b.

1: 2

c.

1: 5

d.

1: 8

Question number: 100

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The present ages of three persons in proportions 2: 3: 4. Five years ago, the sum of their ages was 48. Find their present ages (in years).

Choices

Choice (4) Response

a.

16, 28, 26

b.

8, 20, 28

c.

14, 21, 28

d.

None of the above

Question number: 101

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Two poles 30 m and 15 m high stand upright in a ground. If their feet are 36 m apart, find the distance between tops.

Choices

Choice (4) Response

a.

30 m

b.

39 m

c.

35 m

d.

25 m

Question number: 102

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A boat covers a certain distance downstream in 2 hour, while it comes back in 1 12 hours. If the speed of the stream be 5 kmph, what is the speed of the boat in still water?

Choices

Choice (4) Response

a.

25 kmps

b.

35 kmps

c.

12 kmps

d.

11 kmps

Question number: 103

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The average age of 15 children in a class is 7 years. If the teacher’s age is included, the average age becomes 10 years. Find the teacher’s age.

Choices

Choice (4) Response

a.

55

b.

42

c.

35

d.

45

Question number: 104

» Mental Ability » Basic Arithmetic

MCQ▾

Question

. If (15)3y = 0.008, then (0.20)y will be ________

Choices

Choice (4) Response

a.

0.125

b.

1

c.

0.0625

d.

0.20

Question number: 105

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A shopkeeper declares a sale of electronics item, giving 15 % discount. If the net sale price of an electronic item is rupees 5000, what is its market price?

Choices

Choice (4) Response

a.

550 Rs.

b.

952 Rs.

c.

5882.35 Rs.

d.

500 Rs.

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