If 24 is subtracted from three times an unknown number, the difference is 258. What is the unknown number?

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 1)
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  1. 78
  2. 82
  3. 94
  4. 70

Answer (Detailed Solution Below)

Option 3 : 94
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Detailed Solution

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Given:

If 24 is subtracted from three times an unknown number, the difference is 258.

Calculation:

3x - 24 = 258

Where, x = unknown number

⇒ 3x - 24 = 258

⇒ 3x = 258 + 24

⇒ 3x = 282

⇒ x = 282 ÷ 3

⇒ x = 94

∴ The correct answer is option (3).

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