IMO Mathematics Olympiad Class 9: Questions 688  694 of 919
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Question number: 688
Question
Average weight of 9 persons is 48 kg. If one man weighing 32 kg, died, what is an average age of the remaining 8 persons.
Choices
Choice (4)  Response  

a.  50 

b.  52 

c.  54 

d.  56 

Question number: 689
Question
Given that is a solution of . The other solutions are ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 690
Question
A card is drawn at random from a well shuffled pack of 52 cards. The probability that the ‘9’ of red color card is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 691
Question
=
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 692
Question
If and , then value of y when , is________.
Choices
Choice (4)  Response  

a.  2 

b.  2 

c.  1 

d.  1 

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:
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: 693 (1 of 3 Based on Passage) Show Passage
Question
The percentage of increase in speed during 10.00 hrs and 12.00 hrs is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 694 (2 of 3 Based on Passage) Show Passage
Question
The average speed (in km/hour) between 10.00 hrs, 12.00 hrs and 15.00 hrs is ________
Choices
Choice (4)  Response  

a.  62 

b.  63 

c.  68 

d.  57 
