Multiple choice

The average weight of A, B, C, D is 50 kg. A new person E join them; then he average weight of the group increased by 1 kg. Find the weight of E. A, B, C, D का औसत भार 50 किग्रा है। एक नया व्यक्ति E और आ जाता है तो औसत भार एक किग्रा बढ़ जाता है। व्यक्ति E का भार बताइए।

  1. 54 kg/किग्रा.

  2. 55 kg/किग्रा.

  3. 101 kg/किग्रा.

  4. 46 kg/किग्रा.
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B Correct answer
Explanation

Total weight of A, B, C, D = 4 × 50 = 200 kg. When E joins, new average = 51 kg for 5 people. Total weight of all 5 = 5 × 51 = 255 kg. E's weight = 255 - 200 = 55 kg. Option C (101 kg) would only be correct if average increased by 10 kg, not 1 kg.

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