Hello Aspirants. Welcome to Online Quantitative Aptitude section in AffairsCloud.com. Here we are creating question sample in Ratio & Proportion , which is common for all the competitive exams. We have included Some questions that are repeatedly asked in exams !!
- The salaries of A,B and C are in the ratio 5:3:2.If the increments of 20% ,10% and 20% are allowed in their salaries, then what will be the new ratio of their salaries ?
A)22:11:9
B)22:10:8
C)20:11:8
D)20:10:9
E)None of theseAnswer – C) 20:11:8
Explanation :
5:3:2 = 500:300:200
500×(20/100) = 100 => 500+100 = 600
300×(10/100) = 30 => 300+33 = 330
200×(20/100) = 40 => 200+40 = 240
600:330:240 = 20:11:8 - Two numbers are respectively 40% and  60% more than than the third number. The ratio of the two number is
A)6:7
B)7:8
C)8:7
D)7:5
E)None of theseAnswer – B) 7:8
Explanation :
Let third number = x
(140/100)x = (7/5)x
(160/100)x = (8/5)x
(7/5) : (8/5) = 35 : 40 = 7 : 8 - A sum of money is to be distributed among P , Q , R and S in the proportion 2:5:6:7, If R get Rs.500 more than S,what is P’s share ?
A)500
B)700
C)1000
D)1200
E)None of theseAnswer – C) 1000
Explanation :
S – R = 7 – 6 = 1 => 500
2 × 500 = 1000 - Ratio of earnings of A and B is  3:5. If the earnings of A increase by 25% and those of B decrease by 30%, the new ratio of their earnings become 6:8.What is A’s earnings ?
A)16,000
B)34,000
C)15,000
D)32,000
E)Data inadequateAnswer – E)Â Data inadequate
Explanation :We cant derive the earnings from the given details - The sum of the three number is 68.If the ratio of the first to second is 3:2 and that of the second to the third is 5:3 , then the second number is
A)21
B)22
C)23
D)24
E)None of theseAnswer -B) 22
Explanation :
A: B = 3:2
B:C = 5 : 3
B:C =(5×[2/5]) : (3×[2/5])= 2: (6/5)
A:B:C = 3:2:(6/5) = 15:10:6
Second number = (10/31)×68 = 21.9 = 22 - The ratio of prices of 2 dresses is 10:15.If the price of the first dress is increased by 10% and that of the second dress by Rs.400 then the ratio of their prices is 4:7.What are the initial prices of the dresses ?
A)91
B)92
C)93
D)94
E)None of theseAnswer -D) 94
Explanation :
Let the initial price of the dress = 10x and 15x
Price of the 1st dress after increment = 10x × (110/100) = 11x
Price of the 2nd dress after increment = 15x+400
[11x/(15x+400)] = 4/7
77x = 60x + 1600
17x = 1600
X = 1600/17 = 94.11 = 94 - A Zoo has 66 fishes , some white and rest orange , Which of the following could be the ratio of white to orange fishes in the zoo ?
A)1:7
B)2:9
C)3:7
D)2:5
E)None of theseAnswer – B) 2:9
Explanation :
2+9 = 11
66 can divisible by 11. - The ratio of the number of boys to that of girls in a school is 3:2. If 30% of boys and 70% of girls appeared in an examination, the ratio of students appeared in the examinations to that not appeared in the examination is
A)23:27
B)22:25
C)21:17
D)18:17
E)None of theseAnswer -A) 23: 27
Explanation :
3:2 = 30:20
30% boys = (30/100) × 30= 9
70% girls = (70/100) × 20 = 14
(9+14) : (50-23) = 23 : 27 - If 20% of x = 30% of y then x:y is
A)2:3
B)3:2
C)1:2
D)1:3
E)None of theseAnswer – B) 3:2
Explanation :
(20/100)x = (30/100)y
x/y = (30×100)/(100×20) = 3/2 = 3:2 - In a bag there are coins of 25p, 10p and 5p in the ratio 1:2:3.If there are Rs.45 in all then find how many 25p coins are there ?
A)60
B)65
C)70
D)75
E)None of theseAnswer – D) 75
Explanation :
[(25x) + (10x × 2) + (5x × 3)] / 100 = 45
[25x + 20x + 15x] / 100 = 45
60 x = 4500
X = 4500/60 = 75
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