IMO- Mathematics Olympiad Class 9: Questions 694 - 699 of 919

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Passage

A Train is going on a long journey for 20 hours, starting at 3.00 hrs. The speed of the car at different hours is given below:

Train with its speed values is given

Calculate the values as asked in question

Time (in hrs):

3

5

8

10

12

15

18

20

23

Speed (in km/hour):

60

70

90

50

60

75

60

30

60

From the above table answer the following questions.

Question number: 694 (2 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

The percentage of decrease in speed during 18.00 hrs and 20.00 hrs is ________

Choices

Choice (4) Response

a.

80%

b.

30%

c.

50%

d.

40%

Question number: 695 (3 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

The percentage of increase in speed during 10.00 hrs and 12.00 hrs is ________

Choices

Choice (4) Response

a.

16%

b.

1823%

c.

20%

d.

1613%

Question number: 696

» Analytical Reasoning and Logical Reasoning

MCQ▾

Question

If XY means X is the wife of Y, X$Y means X is the son of Y and XψY means X is the sister of Y, which of the following would mean that A is the daughter of B?

Choices

Choice (4) Response

a.

A$CψDB

b.

AC$DψB

c.

AψCD$B

d.

AψC$DB

Question number: 697

» Statistics and Probability

MCQ▾

Question

Mean marks scored by 40 students were found to be 60. Later it was observed that a score of 48 was misread as 84. Then the correct mean is ________

Choices

Choice (4) Response

a.

59.1

b.

58.2

c.

59

d.

58

Question number: 698

» Everyday Mathematics

MCQ▾

Question

The area of a rectangle is 1000 square meters. If the length is 60% more than the breadth, what is the breadth of the rectangular field?

Choices

Choice (4) Response

a.

40 m

b.

30 m

c.

25 m

d.

35 m

Question number: 699

» Linear Equations in Two Variables

MCQ▾

Question

If the point (2, 5) lies on the graph of the equation 9y=ax+13 , then the value of a is________.

Choices

Choice (4) Response

a.

17

b.

14

c.

15

d.

16

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