# Everyday Mathematics (IMO- Mathematics Olympiad Class 9): Questions 79 - 84 of 99

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## Question number: 79

» Everyday Mathematics

MCQ▾

### Question

If 3 is added to the denominator of a fraction, the fraction becomes 6. If 4 is added to the numerator, the fraction becomes 30, the fraction is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 80

» Everyday Mathematics

MCQ▾

### Question

In an office, the number of men is more than the number of women by 12 of the total strength. The ratio of men’s to women’s is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 81

» Everyday Mathematics

MCQ▾

### Question

If a commission of is given on the marked price of a book, the publisher gains . If the commission is increased to, the gain is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

## Question number: 82

» Everyday Mathematics

MCQ▾

### Question

The compound interest on Rs. 100000 at per annum for 2 years 3 months, compound annually is ________

### Choices

Choice (4) Response

a.

Rs. 100000

b.

Rs. 251200

c.

Rs. 151200

d.

Rs. 51200

## Question number: 83

» Everyday Mathematics

MCQ▾

### Question

If 20 men working 5 hours a day for 10 days can complete a job, how many men working 10 hours a day for 5 days will be needed?

### Choices

Choice (4) Response

a.

20

b.

50

c.

25

d.

65

## Question number: 84

» Everyday Mathematics

MCQ▾

### Question

A fan is listed at Rs. 650, with a discount of what additional discount must be offered to the customer to bring the net price to Rs. 452?

### Choices

Choice (4) Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

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