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

Question

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

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Answer 1

Correct Answer: 7 : 1

Solution : A : B = 3 : 2, B : C = 7 : 5 and C : D = 10 : 3
So, $\frac{A}{B} \times \frac{B}{C} \times \frac{C}{D} = \frac{3}{2} \times \frac{7}{5} \times \frac{10}{3}$
$\Rightarrow \frac{A}{D} = \frac{7}{1}$
$\Rightarrow A : D = 7 : 1$
Hence, the correct answer is 7 : 1.

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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 : 1Option 2: 1 : 7Option 3: 4 : 3Option 4: 3 : 4

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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