# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 884 - 889 of 931

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## Question 884

### Question

MCQ▾

If PAPER = 56 and UNCLE = 55, then WORKBOOK = ?

### Choices

Choice (4)Response

a.

105

b.

100

c.

115

d.

110

## Question 885

MCQ▾

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 886

### Question

MCQ▾

Eight people are planning to share equally the cost of a rental car. If one person withdraws from the arrangement and the others share equally the entire rental of the car, then the share of each of the remaining persons is increased by ________ of the original share.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 887

### Question

MCQ▾

The number of positive integers k for which the equation has an integer solution for x is ________

### Choices

Choice (4)Response

a.

0

b.

1

c.

-1

d.

2

## Question 888

### Question

MCQ▾

A box contains 12 balls out of which x are black. If one ball is drawn at random from the box, what is the probability that it will be a black ball? If 6 more black balls are put in the box, the probability of drawing a black ball is now double of what is was before, then x is________

### Choices

Choice (4)Response

a.

3

b.

5

c.

2

d.

7

## Question 889

### Question

MCQ▾

Two angles are complementary. The measure of one angle is 15˚ more than twice the other. What is the measure of the smaller angle?

### Choices

Choice (4)Response

a.

25˚

b.

35˚

c.

55˚

d.

65˚