Given:
The average weight of 27 students of a school is 53 kg.
Solution:
Total weight of 27 students = 27 × 53 = 1431 kg
The new average weight of 28 people (27 students + 1 teacher) becomes:
New average weight = 53 + 0.7 = 53.7 kg
Total weight of 28 people = 28 × 53.7 = 1503.6 kg
Weight of teacher = Total weight of 28 people - Total weight of 27 students
Weight of teacher = 1503.6 kg - 1431 kg = 72.6 kg
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60 Mins English English20 Questions40 Marks12 Mins English English80 Questions160 Marks60 Mins EnglishThe average weight of Shivam, Rupesh and Mandar is 45 kg. If the average weight of Shivam and Rupesh is 38 kg and the average weight of Rupesh and Mandar is 50 kg, then find Rupesh's weight (in kg).
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