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1. What is the volume of the cylindrical tank ? Statement I: Diameter of the base is equal to the height of the tank. Statement II: Height of the tank is 20 m. Statement III: Area of the base is 320 sq. m. A) Only I and III. B) Only I C) Only III D) Any of the two E) None of these 2. What is the selling price of the camera if no discount is offered ? Statement I: Cost price of the camera is Rs.10,000. Statement II: Profit earned was 20%. Statement III: Had 20% discount been offered on selling price the profit would have been Rs. 700. A) Only III B) Only II and III C) Only I and II D) All of these E) Any two of these 3. How many students failed in class 6 ? Statement I: 400 students passed in class . Statement II: Number of students failed in class 6 is 10% of those of failed in class 7? Statement III: 75% of the students who appeared in examination have passed either in class 8. A) Only II and III B) Only I and II C) Only II
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AL/RATIO & PROPORTIONS 001 1. If a : b = 5 : 9 and b : c = 4 : 7. Find a : b : c 2. If a : b = 2 : 3 , b : c = 4 : 5 and c : d = 6 : 7, then a : d is I. Find a : b : c : d 3. The number to added to each of the numbers 7,16,43,79 to make the number in proportion is 4. If A : B : C = 2: 3: 4 then is equal to 5. If A : B = , B : C = and C : D = then ratio A : B : C : D is 6. 2A = 3B = 4C then A : B : C is 7. If 2A = 3B and 4B = 5C then A : C is 8. The ratio of 4 3.5 : 2 5 is same as 9. If 0.75 : x :: 5 : 8, then x is equal to 10. If then the value of x is 11. x : y = 5 : 2 then (8x + 9y ) : (8x + 2y) is 12. If 15% of x = 20% of y, then x:y is 13. (4x 2 – 3y 2 ) : (2x 2 + 5y 2 ) = 12 : 19 then x : y is 14. If ( a+ b) :