IMO Mathematics Olympiad (SOF) Class 8: Questions 272  276 of 1029
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Question number: 272
Question
Rice is bought at Rs. 30.50 per kg and sold at Rs. 32.00 per kg. The gain percent is________.
Choices
Choice (4)  Response  

a.  4.70% 

b.  3.12% 

c.  4.91% 

d.  3.00% 

Question number: 273
» Quadrilaterals and Practical Geometry
Question
Given below steps of construct a quadrilateral ABCD where AB = 5.2 cm, BC = 4.0 cm, CD = 4.2 cm, AD = 3.3 cm and which of the following is a wrong step?
(P) Step 1: Draw AB = 5.2cm and construct
(Q) Step 2: With A as center and radius AD = 3.3 cm, cut off AD = 3.3 cm along AX.
(R) Step 3: Join BD. With D as center and radius DC = 4.2 cm, draw an arc.
(S) Step 4: With B as center and radius BC = 4.0 cm, draw an arc to cut the arc drawn in above step at C. Join BC, CD to obtain the required quadrilateral ABCD.
Choices
Choice (4)  Response  

a.  R 

b.  S 

c.  P 

d.  Q 

Question number: 274
Question
A bag contains 50p, 25p, 10p coins in the ratio 1: 3: 2, amounting to Rs. 87. Find the total number of coins.
Choices
Choice (4)  Response  

a.  100 

b.  400 

c.  200 

d.  360 

Question number: 275
Question
When the price of a product was decreased by 10%, the number sold increased by 40%, what was the increase on the total revenue?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 276
» Quadrilaterals and Practical Geometry
Question
Four angles of a quadrilateral are in the ratio 2: 4: 6: 8. The greatest angle is________.
Choices
Choice (4)  Response  

a.  144 

b.  110 

c.  120 

d.  150 
