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) :
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AL/PERCENTAGE 001 1. Evaluate a) 28% of 450 + 45% of 280 b) 16 2/3 % of 600gm – 33 1/3 % of 180gm c) 860% of 50 + 50% of 860 2. a) 2 is what percent of 50 b) ½ is what % of 1/3 c) What percent of 7 is 84 3. Which is the greatest in 16 2/3 %. 2/15 , 0.17 4. If the sale tax be reduced from 3 ½% to 3 1/3% then what difference does it make to a person who purchases an article with marked price of Rs.8400 5. An inspector rejects 0.08% of a meters as defective. How many will he examine to reject 2 6. In an election between two candidates, 72% of the voters cast their voles. Out of which 2% of the votes were declared invalid. A candidate got 9261 votes which were 75% of the total valid votes. Find the total number of votes enrolled in that election 7. A mans salary was decreased by 50% and subsequently increased by 50%. How much percent does he lose 8. A man spe