The mean weight of a group of 44 employees in an IT company is 55 kg. If the weight of a new recruit be included, then the mean weight is increased by 250 g. What is the weight (in kg) of the new recruit?
Answer & explanation
Correct answer: option 1
Sum of weight of 44 employee = 44 × 55 = 2420 kg
After adding weight of 1 new employee
Total weight of 44 old employee and one new employee = 45 × 55.25 = 2486.25 kg
Weight of new employee = 2486.25 - 2420 = 66.25 kg