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If 9 : 12 :: 12 : k, then find the value of k + 1.  

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RRB Technician Grade III Official Paper (Held On: 30 Dec, 2024 Shift 1)
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  1. 18
  2. 15
  3. 16
  4. 17

Answer (Detailed Solution Below)

Option 4 : 17
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Detailed Solution

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Given:

9 : 12 :: 12 : k

Formula used:

a : b :: c : d ⇒ b/a = d/c

Calculation:

12/9 = k/12

⇒ k = (12 × 12)/9

⇒ k = 16

⇒ So, k + 1 = 16 + 1

⇒ k + 1 = 17

∴ The correct answer is option (4).

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