Question : If A : B = 3 : 2, B : C = 7 : 5 and C : D = 10 : 3, then what is A : D equal to?
Option 1: 7 : 1
Option 2: 1 : 7
Option 3: 4 : 3
Option 4: 3 : 4
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Correct Answer: 7 : 1
Solution : A : B = 3 : 2, B : C = 7 : 5 and C : D = 10 : 3 So, $\frac{A}{B}×\frac{B}{C}×\frac{C}{D}=\frac{3}{2}×\frac{7}{5}×\frac{10}{3}$ $⇒ \frac{A}{D}=\frac{7}{1}$ $⇒A:D=7:1$ Hence, the correct answer is 7 : 1.
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Question : If A : B = 5 : 4, B: C = 6 : 5, C: D = 7 : 10, then what is the value of A : D?
Option 1: 21 : 25
Option 2: 7 : 3
Option 3: 21 : 20
Option 4: 25 : 24
Question : Directions: If A denotes addition, B denotes multiplication, C denotes subtraction, and D denotes division, then what will be the value of the following equation? 11 C 5 A (9 D 3) B 2 = ?
Option 1: 12
Option 2: 10
Option 3: 7
Option 4: 9
Question : If A : B = 3 : 4 and B : C = 1 : 5, then what is A : C?
Option 1: 3 : 20
Option 2: 3 : 4
Option 3: 1 : 4
Option 4: 3 : 5
Question : If $A: B: C=2: 3: 5$, then what is the value of $(A+B):(B+C):(C+A)$?
Option 1: 8 : 15 : 14
Option 2: 5 : 8 : 7
Option 3: 6 : 9 : 14
Option 4: 9 : 10 : 12
Question : If a : b : c = 2 : 3 : 7, then what is 2a : 3b : 7c?
Option 1: 4 : 9 : 49
Option 2: 5 : 10 : 52
Option 3: 6 : 10 : 49
Option 4: 6 : 10 : 47
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