Multiple choice

Six articles have an average weight of 167 grams. An article with weight 162 grams is excluded from the group. Find the new average weight

  1. 168 grams

  2. 166 grams

  3. 167 grams

  4. 165 grams

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total weight of 6 articles = 6 × 167 = 1002 grams. After removing 162 gram article, new total = 1002 - 162 = 840 grams. New average = 840/5 = 168 grams. The average increases because the removed article weighs less than the original average.