What appro×imate value should come in the place of ‘?’ in the following questions.

17/8 × ?/51 × 4/9 = 20/27

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RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 2)
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  1. 45
  2. 40
  3. 25
  4. 20
  5. None of these

Answer (Detailed Solution Below)

Option 2 : 40
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Calculation:

17/8 × ?/51 × 4/9 = 20/27

⇒ (17 × ? × 4) / (8 × 51 × 9) = 20 / 27

⇒ (68 × ?) / (3684) = 20 / 27

⇒ 68 × ? = (20 × 3684) / 27

⇒ 68 × ? = 73680 / 27

⇒ 68 × ? = 2720

⇒ ? = 2720 / 68

⇒ ? = 40

∴ The value of '?' is 40.

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