The ratio of the first and second class fares between two railway stations is 4 : 1 and that of the number of passengers travelling by first and second classes is 1 : 40. If on a day Rs. 1100 are collected as total fare, the amount collected from the first class passengers is = ?
A. Rs. 315
B. Rs. 275
C. Rs. 137.50
D. Rs. 100
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If a : (b + c) = 1 : 3 and c : (a + b) = 5 : 7, then b : (a + c) is equal to.
A. 1 : 2
B. 2 : 3
C. 1 : 3
D. 2 : 1
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If a : b = 3 : 4, b : c = 4 : 7, then c a + b + c
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If A : B : C = 2 : 3 : 5 and A = x% of (B + C), then x is equal to -
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If a and b are rational numbers and
a + b 3 = 2 − 3 1 , then a : b is equal to = ?
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If A : B = 3 : 4 and B : C = 8 : 9, then A : B : C is = ?
A. 8 : 6 : 9
B. 9 : 8 : 6
C. 6 : 8 : 9
D. 3 : 32 : 9
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If 2A = 3B = 4C, the A : B : C is = ?
A. 2 : 3 : 4
B. 4 : 3 : 2
C. 6 : 4 : 3
D. 3 : 4 : 6
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x, y, z, u are real numbers such that x : y = y : z = z : u and x : u = 64 : 27. the value of x : z is -
A. 64 : 27
B. 16 : 9
C. 4 : 3
D. 3 : 4
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If p : q : r = 1 : 2 : 4, then
5 p 2 + q 2 + r 2 is equal to -
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If A : B : C = 2 : 3 : 4, then the ratio B A C B A C
A. 4 : 9 : 16
B. 8 : 9 : 24
C. 8 : 9 : 12
D. 8 : 9 : 16
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The ration 43.5 : 25 is the same as = ?
A. 4 : 1
B. 2 : 1
C. 1 : 2
D. 1 : 4
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If A : B = 1 : 2, B : C = 3 : 4, C : D = 6 : 9 and D : E = 12 : 16 then A : B : C : D : E is equal to = ?
A. 1 : 3 : 6 : 12 : 16
B. 2 : 4 : 6 : 9 : 16
C. 3 : 4 : 8 : 12 : 16
D. 3 : 6 : 8 : 12 : 16
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The numbers are in the ratio 3 : 5 and their LCM is 225. The smaller number is = ?
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If b a = c b = d c , a 3 + b 3 + c 3 b 3 + c 3 + d 3
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If p : q = 3 : 4, r : s = 8 : 5 and x : y = 10 : 6, then psx : qry is equal to.
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If 2 x = 3 y = 4 z = k 2 x − 3 y + 5 z ,
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A mixture contains wine and water in the ratio 3 : 2 and another mixture contains them in the ratio 4 : 5. How many litres of the latter must be mixed with 3 litres of the former so that the resulting mixture may contain equal quantities of wine and water = ?
A. 5 5 2 litres
B. 5 3 2 litres
C. 4 2 1 litres
D. 3 4 3 litres
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The monthly salaries of A, B and C are in the ratio 2 : 3 : 5. If C's monthly salary is Rs. 12000 more than that of A, then B's annual salary is = ?
A. Rs. 120000
B. Rs. 144000
C. Rs. 180000
D. Rs. 240000
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The ratio of the numbers of boys and girls in a school was 5 : 3. Some new boys and girls were admitted to the school, in the ratio 5 : 7. At this, the total number of students in the school became 1200 and the ratio of boys to girls changed to 7 : 5. The number of students in the school before new admissions was = ?
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If a : b = c : d, then mb + nd ma + nc
A. m : n
B. dm : cn
C. an : mb
D. a : b
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