# Mental Ability-Basic Algebra (NCO- Cyber Olympiad (SOF) Class 9): Questions 69 - 72 of 101

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## Question number: 69

» Mental Ability » Basic Algebra

MCQ▾

### Question

A classroom contained an equal number of boys and girls. Eight girls left to play hockey, leaving twice as many boys as girls in the classroom. Then the number of students in the class originally was________

### Choices

Choice (4) Response

a.

25

b.

14

c.

18

d.

None of the above

## Question number: 70

» Mental Ability » Basic Algebra

MCQ▾

### Question

A Stadium contained an equal number of boys and girls. 20 boys left to play volleyball, leaving twice as many girls as boys in the Stadium. Then the number of students in the Stadium originally was________

### Choices

Choice (4) Response

a.

80

b.

100

c.

120

d.

90

## Question number: 71

» Mental Ability » Basic Algebra

Appeared in Year: 2011

MCQ▾

### Question

Look at the given figure. What will be the new coordinates of the figure when it is reflected across the y-axis?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 72

» Mental Ability » Basic Algebra

MCQ▾

### Question

Ms Neha works at a Art gallery. Last week she sold 10 more than 5 times the number of Paintings that she sold this week. Ms. Neha sold a total of 200 paintings over the 2 weeks. Which system of equations can be used to find a, the number of paintings she sold last week and b the number of paintings she sold this week?

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page