The mean of 15 numbers is 25. If each number is multiplied by 4. Find the mean of the new numbers:

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OSSC CGLRE (Mains) Exam (Mathematics) Official Paper (Held On: 23 July, 2023)
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  1. 6.25
  2. 100
  3. 60
  4. 3.75

Answer (Detailed Solution Below)

Option 2 : 100
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Detailed Solution

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Given:

Mean of 15 numbers = 25

Each number is multiplied by 4

Formula used:

New Mean = Old Mean × Multiplication Factor

Calculation:

Old Mean = 25

Multiplication Factor = 4

⇒ New Mean = 25 × 4

⇒ New Mean = 100

∴ The mean of the new numbers is 100.

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