The average weight of seven children is 38.2 kg. if three more children weighing 25.6, 21.9, 19.5 kgs are added to the group, what would be the new average weight in kilograms?
Answer & explanation
Correct answer: option 1
less weight added:
38.2 - 25.6 = 12.6
38.2 - 21.9 = 16.3
38.2 - 19.4 = 18.8
Total less weight = 12.6 + 16.3 + 18.8 = 47.7
Total avg. decreased by = \(\frac{47.7}{10}\) = 4.77
New avg. weight = 38.20 - 4.77 = 33.4