# NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 39 - 48 of 1732

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## Question 39

### Question

MCQ▾

The ratio between two numbers is 5: 3. If each number is increased by 5, the ratio becomes 3: 2. Find the numbers.

### Choices

Choice (4)Response

a.

25,15

b.

30,15

c.

25,20

d.

30,20

## Question 40

### Question

MCQ▾

The ratio of the least prime number to the least composite number is

### Choices

Choice (4)Response

a.

1: 3

b.

1: 4

c.

1: 2

d.

2: 3

## Question 41

### Question

MCQ▾

The ratio between two numbers is 9: 5. If each number is increased by 10, the ratio becomes 7: 4. Find the numbers.

### Choices

Choice (4)Response

a.

250,120

b.

320,210

c.

305,105

d.

270,150

## Question 42

### Question

MCQ▾

Example of an improper fraction is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 43

### Question

MCQ▾

Sum of 1.5,12.6,56.198 is

### Choices

Choice (4)Response

a.

702.98

b.

70.298

c.

7029.8

d.

7.0298

## Question 44

### Question

MCQ▾

Product of and is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 45

### Question

MCQ▾

Difference of and is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 46

### Question

MCQ▾

The length and width of a tape are 3 m and 27 cm. Write their ratio.

### Choices

Choice (4)Response

a.

10: 9

b.

100: 9

c.

9: 10

d.

9: 100

## Question 47

### Question

MCQ▾

of 49 km = ________ m.

### Choices

Choice (4)Response

a.

700

b.

70

c.

7

d.

7000

## Question 48

### Question

MCQ▾

The present age of A is thrice that of B. 20 years from now, age of A will be times of B. Find the present ages of A and B respectively.

### Choices

Choice (4)Response

a.

40,120

b.

80,60

c.

60,80

d.

120,40

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