# NCO- Cyber Olympiad (SOF) Class 10: Questions 45 - 48 of 461

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## Question 45

### Question

MCQ▾

In a class of four students there are four marks given to students A, B, C and D. The average of the first two marks is 60. The average of the second and third marks in 85 and the average of the third and fourth marks is 90. The average of the first and fourth marks is

### Choices

Choice (4)Response

a.

65

b.

62

c.

70

d.

50

## Question 46

### Question

MCQ▾

In a class of four students there are four marks given to students A, B, C and D. The average of the first two marks is 30. The average of the second and third marks in 55 and the average of the third and fourth marks is 70. The average of the first and fourth marks is

### Choices

Choice (4)Response

a.

40

b.

60

c.

45

d.

85

## Question 47

### Question

MCQ▾

The equation below shows the profit, p, from selling n cups of coffee.

Which of the following best describes the relationship between p and n?

### Choices

Choice (4)Response

a.

As n increases, p stays the same

b.

As n increases, p sometimes increases and sometimes decreases

c.

As n increases, p increases

d.

As n increases, p decreases

## Question 48

### Question

MCQ▾

The number of words Kiara typed varied directly with the amount of time she spent typing. If she typed 120 words in 10 minutes, how long would it take her to type 1,320 words?

### Choices

Choice (4)Response

a.

130 minutes

b.

55 minutes

c.

110 minutes

d.

120 minutes