IMO Mathematics Olympiad Class 8: Questions 70  77 of 1029
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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.  1 

b.  100 

c.  1000 

d.  10 

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.  1000 

b.  2000 

c.  500 

d.  3000 

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.  1 

b.  2 

c.  0 

d.  3 

Question number: 73
» Linear Equations in One Variable
Question
The value of for which is_.
Choices
Choice (4)  Response  

a. 


b.  18 

c. 


d.  35 

Question number: 74
» Linear Equations in One Variable
Question
A number 121 is divided into two parts in the ratio 6: 5. The product of the number is_.
Choices
Choice (4)  Response  

a.  3211 

b.  1550 

c.  3750 

d.  3630 

Question number: 75
» Linear Equations in One Variable
Question
Solution of the equation is_.
Choices
Choice (4)  Response  

a.  5 

b.  0 

c.  5 

d.  1 

Question number: 76
» Linear Equations in One Variable
Question
A number 100 is divided into two parts in the ratio 3: 2. The product of the number is_.
Choices
Choice (4)  Response  

a.  2400 

b.  2700 

c.  1500 

d.  2600 

Question number: 77
» Linear Equations in One Variable
Question
A motor boat covers a certain distance downstream in a river in 1 hours. It covers the same distance upstream in 1 and half hours. The speed of the water is 2 km/hr. The speed of the boat in still water is_.
Choices
Choice (4)  Response  

a.  10 km/hr 

b.  12 km/hr 

c.  11 km/hr 

d.  5 km/hr 
