Ratio and proportion

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Q. 1. If a : b = 7 : 9 and b : c =15 : 7, then what is a : c
A) 5 : 3
B) 3 : 5
C) 7 : 21
D) 7 : 15

Q. 2. ₹ 6200 is divided into three parts proportional to 1/2 : 1/3 : 1/5 are respectively
A) ₹3000, ₹2000, ₹1200
B) ₹3500, ₹1500, ₹1200
C) ₹2500, ₹2000, ₹1700
D) ₹2200,  ₹3000,  ₹1000  

Q. 3. The ratio of A to B is 4 : 5 and that of B to C is 2 : 3.If A equals 800,C equals
A) 1000
B) 1200
C) 1500
D) 2000

Q. 4. If A = 4/5 of B and B = 5/2 of C, then the ratio of A : C is 
A) 1 : 2
B) 2 : 1
C) 2 : 3
D) 1 : 3

Q. 5. If 2A=3B=4C, then A:B:C is
A) 2 : 3 : 4
B) 4 : 3 : 2
C) 6 : 4 : 3
D) 3 : 4 : 6

Q. 6. If (3x + 5)/(5x - 2) = 2/3, then the  value of x is 
A) 11
B) 19
C) 23
D) 7

Q. 7. What must be added to each term of the ratio 2 : 5 so that it may equal to 5 : 6 ?
A) 65
B) 78
C) 13
D) 12

Q. 8. If x/y = 3/4, the ratio of (2x +3y) and (3y - 2x) is
A) 2 : 1
B) 3 : 2
C) 1 : 1
D) 3 : 1

Q. 9. Two numbers are in the ratio 4 : 5 and their L.C.M. is 180. The smaller number is 
A) 9
B) 15
C) 36
D) 45



Q. 10. A sum of ₹9000 is to be distributed among A, B and C in the ratio 4 : 5 : 6. What will be the difference between A's and C's shares? 
A) ₹600
B) ₹1000
C) ₹900
D) ₹1200



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