IMO Level 1 Mathematics Olympiad (SOF) Class 8: Questions 67  72 of 1040
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Question number: 67
» Linear Equations in One Variable
Question
Two angles in a triangle in the ratio 2: 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. 


Question number: 68
» Linear Equations in One Variable
Question
The length of a rectangle is 6 m more than twice of its breadth. The length and breadth of the rectangle if its perimeter is 162 m, is_.
Choices
Choice (4)  Response  

a.  56m, 25m 

b.  48m, 22m 

c.  55m, 30m 

d.  55m, 20m 

Question number: 69
» Linear Equations in One Variable
Question
A motor boat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 and half hours. The speed of the water is 1.5 km/hr. The speed of the boat in still water is_.
Choices
Choice (4)  Response  

a.  11 km/hr 

b.  5 km/hr 

c.  10 km/hr 

d.  19.5 km/hr 

Question number: 70
» Linear Equations in One Variable
Question
Of a number multiplied by of the same number make 25. The number is_.
Choices
Choice (4)  Response  

a.  10 

b.  1 

c.  1000 

d.  100 

Question number: 71
» Linear Equations in One Variable
Question
There were only two candidates in an election. One got 72 % votes and was elected by a margin of 880 votes. The total number of voters were_.
Choices
Choice (4)  Response  

a.  500 

b.  2000 

c.  3000 

d.  1000 

Question number: 72
» Linear Equations in One Variable
Question
The sum of two numbers is 13 and difference of their squares is 13. The difference of the numbers is?
Choices
Choice (4)  Response  

a.  3 

b.  0 

c.  1 

d.  2 
