# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 553 - 558 of 931

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## Question 553

### Question

MCQ▾

Find the equation of a straight line parallel to y-axis at a distance of 30 units on the right hand side of y-axis

### Choices

Choice (4)Response

a.

y = 30x

b.

x = 30

c.

x = 20y

d.

x = 20

## Question 554

### Question

MCQ▾

A, B and C enter into partnership by making investments in the ratio . After a year, C invests another ₹ 337600 while A withdrew ₹ 45600. The ratio of investments then changes to . How much did A invest initially?

### Choices

Choice (4)Response

a.

₹ 45600

b.

₹ 96000

c.

₹ 141600

d.

Question does not provide sufficient data or is vague

## Question 555

MCQ▾

=

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 556

### Question

MCQ▾

The mean, median and mode of the following numbers 7, 4, 3, 5, 6, 3, 3, 2, 4, 3, 4, 3, 3, 4, 4, 3, 2, 2, 4, 3, 5, 4, 3, 4, 3, 4, 3,1, 2,3 are________

### Choices

Choice (4)Response

a.

3,3, 3

b.

4,3, 3

c.

3.47,3, 3

d.

5,4, 3

## Question 557

### Question

MCQ▾

Which of the following pairs of equations have the same solution?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 558

### Question

MCQ▾

If stands for ‘addition’ , stands for ‘subtraction’ , stands for ‘division’ , stands for ‘multiplication’ , stands for ‘equal to’ , then of the given alternatives which one is correct?

### Choices

Choice (4)Response

a.

b.

c.

d.