IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 533  538 of 1022
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Question number: 533
Question
Each of two groups of tourists has 80 people. If of the first group and of the second group board trains to travel to a hill station, how many more people of the first group board trains than of the second group?
Choices
Choice (4)  Response  

a.  28 

b.  25 

c.  32 

d.  21 

Question number: 534
Question
Four bells toll at intervals of 28 seconds, 30 seconds, 36 seconds and 42 seconds respectively. They start ringing together at a particular time. They next toll together after ________.
Choices
Choice (4)  Response  

a.  26 minutes 

b.  21 minutes 

c.  19 minutes 

d.  15 minutes 

Question number: 535
Question
The ratio of boys to girls in a club is 7: 4. There are 21 fewer girls than boys. What is the total number of children in the club?
Choices
Choice (4)  Response  

a.  84 

b.  77 

c.  231 

d.  49 

Question number: 536
Question
The ratio of girls to boys in a classes is 5: 3. There are 46 fewer boys than girls. What is the total number of children in the classes?
Choices
Choice (4)  Response  

a.  184 

b.  135 

c.  115 

d.  69 

Question number: 537
Question
A class has 21 students. The ratio of girls to boys is 4: 3. How many girls are there in the class?
Choices
Choice (4)  Response  

a.  8 

b.  7 

c.  12 

d.  9 

Question number: 538
Question
I and my wife were sitting in a garden. After a while there came two old men followed by two old ladies. They were followed by three couples who were accomplished by two children each. What was the number of total persons present in the garden?
Choices
Choice (4)  Response  

a.  12 

b.  17 

c.  15 

d.  11 
