IMO Level 1 Mathematics Olympiad (SOF) Class 8: Questions 80  86 of 1040
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Question number: 80
» Linear Equations in One Variable
Question
Archana’s age after 15 years wii be 5 times his age 5 years back. What is the present age of archna?
Choices
Choice (4)  Response  

a.  5 years 

b.  12 years 

c.  20 years 

d.  10 years 

Question number: 81
» Linear Equations in One Variable
Question
The sum of two numbers is 12 and difference of their squares is 12. The difference of the numbers is
Choices
Choice (4)  Response  

a.  2 

b.  0 

c.  1 

d.  3 

Question number: 82
» Linear Equations in One Variable
Question
Two years ago, Sunil was four times as old as his son and two years hence, twice his age will be equal to six times that of his son. Then the present age of Sunil is_.
Choices
Choice (4)  Response  

a.  30 years 

b.  34 years 

c.  29 years 

d.  32 years 

Question number: 83
» Linear Equations in One Variable
Question
The perimeter of a rectangle is numerically equal to the area of rectangle. If length of rectangle is cm, then its width is_.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 84
» Linear Equations in One Variable
Question
The sum of the ages of a man and his wife is 77yrs. The man is 17 years older than his wife. How old is the man?
Choices
Choice (4)  Response  

a.  40 years 

b.  47 years 

c.  35 years 

d.  44 years 

Question number: 85
» Linear Equations in One Variable
Question
Solution of the equation is_.
Choices
Choice (4)  Response  

a. 


b. 


c.  1 

d. 


Question number: 86
» Linear Equations in One Variable
Question
Two angles in a triangle in the ratio 1: 3. If the sum of these angles is equal to the third angle, then the third angle is_.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

