IMO Mathematics Olympiad (SOF) Class 7: Questions 172  177 of 1012
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Question number: 172
Question
Asha was asked to multiply a number by 24. She instead multiplied the number by 42 and got the answer 810 more than the correct answer. The number to be multiplied was ________.
Choices
Choice (4)  Response  

a.  34 

b.  45 

c.  35 

d.  25 

Question number: 173
Question
Monil is years older than his brother is. His brother’s age is 22. What is their total age after 3 years?
Choices
Choice (4)  Response  

a.  years 

b.  years 

c.  years 

d.  years 

Question number: 174
Question
One fourth of Vivaan’s marks in Science exceeds a half of his marks in English by 20. If he got 110 marks in the two subjects together, how many marks did he get in English?
Choices
Choice (4)  Response  

a.  90 

b.  20 

c.  10 

d.  100 

Question number: 175
Question
An employer pays Rs. 10 for each day a worker work, and deducts Rs. 4 for each day he is idle. At the end of 60 days, a worker gets Rs. 530. For how many days did the worker remain idle?
Choices
Choice (4)  Response  

a.  3 

b.  6 

c.  4 

d.  5 

Question number: 176
Question
Purvi had 65 currency notes in all, some of which were of Rs. 50 denomination and the remaining of Rs. 100 denomination. The total amount of these currency notes was Rs. 6000. how much amount did he have in the denomination of Rs. 100?
Choices
Choice (4)  Response  

a.  Rs. 7725 

b.  Rs. 7800 

c.  Rs. 7500 

d.  Rs. 5500 

Question number: 177
Question
If two supplementary angles differ by, then one of the angle is ________.
Choices
Choice (4)  Response  

a. 


b.  62° 

c. 


d.  Both a. and b. are correct 
