Multiple choice

The average weight of 10 students is 80 kg. If the highest and the lowest weights are not considered, the average is 81 kg. If the highest weight is 92 kg, find the lowest– 10 छात्रों का औसत भार 80 किग्रा. है। यदि सबसे अधिक भार वाले छात्र को और सबसे कम भार वाले छात्र को सम्मिलित नहीं किया जाता है, औसत 81 किग्रा. हो जाता है। यदि सबसे अधिक भार 92 किग्रा. है, सबसे कम भार है-

  1. 50

  2. 60

  3. 70

  4. 75
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total weight of 10 students = 10 x 80 = 800 kg. Removing highest (92) and lowest (x), the remaining 8 have average 81, so their total = 8 x 81 = 648 kg. Therefore 92 + x = 800 - 648 = 152, which gives x = 152 - 92 = 60 kg.

Keep practicing — related questions