Multiple choice

In a test, the average marks of 6 students were 60 however, while crosschecking it was found that the marks of one student were misread as 85 instead of 58 then find the correct average marks? एक परीक्षा में 6 छात्रों के औसत अंक 60 है, जबकि पुनः जाँच में यह पाया गया कि एक छात्र के अंक 58 के स्थान पर 85 पढ़ लिये गए तो नया औसत ज्ञात कीजिए।

  1. 56.5

  2. 55.5

  3. 58

  4. 54.6
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B Correct answer
Explanation

Original total marks = 6 × 60 = 360. One student's marks were recorded as 85 instead of 58. Error = 85 - 58 = 27 marks. Corrected total = 360 - 27 = 333. Corrected average = 333/6 = 55.5.

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