# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 531 - 535 of 1022

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## Question 531

### Question

MCQ▾

Mohan has certain amount in his account. He gives half of this to his eldest son and one third of the remaining to his youngest son. The amount left with him now is ________.

### Choices

Choice (4)Response

a.

of the original

b.

of the original

c.

of the original

d.

of the original

## Question 532

### Question

MCQ▾

The total cost of 2 mirrors and 3 stools is ₹ 1525. If one stool costs ₹ 50 more than one mirror, find the price of each mirror and stool respectively.

### Choices

Choice (4)Response

a.

₹ 265, ₹ 355

b.

₹ 225, ₹ 375

c.

₹ 365, ₹ 215

d.

₹ 275, ₹ 325

## Question 533

### 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

### 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

### 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