There is a ratio of 5 : 4 between two numbers. If 40 % of the first number is 12 then what would be the 50% of the second number?
A)
12
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B)
24
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C)
18
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D)
None of these.
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An amount of money is to be distributed among P, Q and R in the ratio of 5 : 8 : 12 respectively. If the total share of Q and R is four times that of P. what is definitely P's share?
A)
Rs. 3000
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B)
Rs. 5000
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C)
Rs. 8000
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D)
Data insufficient.
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The numerator and denominator of a fraction are in the ratio of 2 : 3. If 6 is subtracted from the numerator, the result is a fraction that has a value 2/3 of the original fraction. The numerator of the original fraction is
A)
6
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B)
18
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C)
27
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D)
36
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If A : B : C = 2 : 3 : 4. Then \[\frac{A}{B}:\frac{B}{C}:\frac{C}{A}\] is equal to
A)
4 : 9 : 16
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B)
8 : 9 : 12
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C)
8 : 9 : 16
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D)
8 : 9 : 24
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In a school, the ratio of boys to girls is 4 : 5. When 100 girls leave the school, the ratio becomes 6 : 7. How many boys are there in the school?
A)
1600
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B)
1500
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C)
1300
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D)
None of these
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A person distributes his pens among four friends A, B, C, D in the ratio \[\frac{1}{3}:\frac{1}{4}:\frac{1}{5}:\frac{1}{6}.\] The minimum number of pens that the person should have is
A)
59
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B)
58
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C)
57
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D)
50
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What least number must be subtracted from each of the numbers 21, 38, 55 and 106 so that they becomes in proportional.
A)
2
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B)
3
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C)
4
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D)
5
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The third proportional between \[({{a}^{2}}-{{b}^{2}})\] and \[({{a}^{2}}+{{b}^{2}})\] is
A)
\[\frac{a+b}{a-b}\]
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B)
\[\frac{a-b}{a+b}\]
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C)
\[\frac{{{(a-b)}^{2}}}{a+b}\]
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D)
\[\frac{{{(a+b)}^{3}}}{a-b}\]
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If \[\frac{5x-3y}{5y-3x}=\frac{3}{4},\] then value of \[\frac{x}{y}\] is
A)
2 : 9
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B)
7 : 2
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C)
7 : 9
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D)
None of these.
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Some 1 rupee, 50 paisa and 25 paise coins make up Rs. 93.75 and their number are in proportion 3: 4: 5. The number of each type of coins, are
A)
40, 70, 75
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B)
46, 58, 75
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C)
42, 56, 70
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D)
45, 60, 75
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If \[(a+b):(b+c):(c+a)=6:7:8\] and \[a+b+c=14,\] then the value of ?c? is
A)
8
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B)
7
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C)
6
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D)
12
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The monthly salary of A, B and C is in the proportion 2 : 3 : 5. If C's monthly salary is Rs. 1200 more than A's monthly salary then B's annual salary is
A)
Rs. 14400
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B)
Rs. 24000
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C)
Rs. 1200
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D)
Rs. 2000
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In 30 litres mixture of milk and water, the ratio of milk and water is 7 : 3. Find the quantity of water to be added in the mixture in order to make this ratio 3: 7.
A)
30 litres
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B)
40 litres
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C)
20 litres
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D)
10 litres
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The ratio of three numbers is 3 : 4 : 5 and sum of their squares is 1250. The sum of the numbers is
A)
30
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B)
50
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C)
60
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D)
90
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The sum of three numbers is 98. If the ratio of first to the second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is
A)
20
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B)
30
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C)
48
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D)
58
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Two whole numbers whose sum is 72 cannot be in the ratio
A)
5 : 7
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B)
4 : 5
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C)
3 : 5
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D)
3 : 4
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Seats for mathematics, physics and biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. The ratio of increased seats will be
A)
2 : 3 : 4
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B)
6 : 8 : 9
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C)
6 : 7 : 8
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D)
None of these.
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The ages of A and B are in the ratio 3: 1. 15 year hence the ratio will be 2 : 1. Their present ages are
A)
45 yrs, 15 yrs
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B)
60 yrs, 20 yrs
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C)
30 yrs, 10 yrs
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D)
21 yrs, 7 yrs
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The sides of a triangle are in the ratio \[\frac{1}{2}:\frac{1}{3}:\frac{1}{4}\]and its perimeter is 104 cm. The length of the longest side is
A)
48 cm
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B)
32 cm
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C)
26 cm
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D)
52 cm.
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If \[(x+4):(3x+15)\] is the triplicate of 2 : 3, then the value of x is
A)
1
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B)
3
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C)
4
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D)
None of these
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