the mean weight of 10 students is 60 kg when two students left the class the mean weight become 48 kg.find the mean weight of student who left the class
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Answer:
108 kg
Explanation:
Mean mass = Total mass of students ÷ Total students
Initially,
60 kg = Total Mass ÷ 10 students
Total mass = 60 kg × 10
Total mass = 600 kg
After 2 students left,
48 kg = Total mass ÷ 8 students
Total mass = 48 kg × 8
Total mass = 384 kg
Mass of the 2 students = Difference in total mass
Mass of the 2 students = 600 kg - 384 kg
Mass of the 2 students = 216 kg
Mean mass = Total mass ÷ Total Students
Mean mass = 216 kg ÷ 2 students
Mean mass = 108 kg
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