Multiple choice

The average weight of 29 students is 40 kg. If the weight of teacher be included the average weight is increased by 300 gms. The weight of the teacher is- 29 छात्रों का औसत भार 40 किग्रा है। यदि अध्यापक का भार सम्मिलित कर लिया जाए तो औसत भार 300 ग्राम बढ़ जाता है। अध्यापक का भार है-

  1. 49

  2. 56

  3. 58

  4. 53
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total weight of 29 students = 29 × 40 = 1160 kg. New average with teacher = 40 + 0.3 = 40.3 kg. Total weight of 30 people = 30 × 40.3 = 1209 kg. Teacher's weight = 1209 - 1160 = 49 kg. Option A is correct.

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