# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 533 - 538 of 1022

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## Question 533

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### Question

MCQ▾

Each of two groups of tourists has 80 people. If of the first group and of the second group board trains to travel to a hill station, how many more people of the first group board trains than of the second group?

### Choices

Choice (4)Response
a.28
b.25
c.32
d.21

## Question 534

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### Question

MCQ▾

Four bells toll at intervals of 28 seconds, 30 seconds, 36 seconds and 42 seconds respectively. They start ringing together at a particular time. They next toll together after ________.

### Choices

Choice (4)Response
a.26 minutes
b.21 minutes
c.19 minutes
d.15 minutes

## Question 535

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### Question

MCQ▾

The ratio of boys to girls in a club is 7: 4. There are 21 fewer girls than boys. What is the total number of children in the club?

### Choices

Choice (4)Response
a.84
b.77
c.231
d.49

## Question 536

Edit

### Question

MCQ▾

The ratio of girls to boys in a classes is 5: 3. There are 46 fewer boys than girls. What is the total number of children in the classes?

### Choices

Choice (4)Response
a.184
b.135
c.115
d.69

## Question 537

Edit

### Question

MCQ▾

A class has 21 students. The ratio of girls to boys is 4: 3. How many girls are there in the class?

### Choices

Choice (4)Response
a.8
b.7
c.12
d.9

## Question 538

Edit

### Question

MCQ▾

I and my wife were sitting in a garden. After a while there came two old men followed by two old ladies. They were followed by three couples who were accomplished by two children each. What was the number of total persons present in the garden?

### Choices

Choice (4)Response
a.12
b.17
c.15
d.11