# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 477 - 482 of 1022

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## Question number: 477

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MCQ▾

### Question

Kiran answered of the questions on her quiz correctly. What percent of the questions did she answer incorrectly?

### Choices

Choice (4) Response

a.

75%

b.

25%

c.

50%

d.

34%

## Question number: 478

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MCQ▾

### Question

Jimmy’s and her mother both had birthdays last month. The sum of their ages is 75 years. His mother’s age is 4 times Jimmy’s age. What is age of Jimmy’s mother?

### Choices

Choice (4) Response

a.

45 years

b.

60 years

c.

15 years

d.

50 years

## Question number: 479

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MCQ▾

### Question

Each of two groups of tourists has 30 students. If of the first group and of the second group board buses to travel to a tour, how many more students of the first group board buses than of the second group?

### Choices

Choice (4) Response

a.

4

b.

40

c.

2

d.

5

## Question number: 480

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MCQ▾

### Question

There are 54 green apples and 30 more red apples than green apples in a container. What is the ratio of the number of red apples to the total number of apples?

### Choices

Choice (4) Response

a.

5: 9

b.

5: 14

c.

14: 23

d.

23: 14

## Question number: 481

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MCQ▾

### Question

The total cost of 6 tables and 4 chairs is Rs. 1250. If one table costs Rs. 30 more than one chair, find the price of each table and chair respectively.

### Choices

Choice (4) Response

a.

Rs. 137, Rs. 107

b.

Rs. 167, Rs. 127

c.

Rs. 145, Rs. 125

d.

Rs. 130, Rs. 120

## Question number: 482

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MCQ▾

### Question

Equal sums of Rs. 7200 were lent to Megha and Priya at 5 % per annum for a period of 4 years and 5 years respectively. Find the difference of the interest paid by Megha and Priya.

### Choices

Choice (4) Response

a.

Rs. 560

b.

Rs. 140

c.

Rs. 260

d.

Rs. 360