The average weight of 40 students of a class is 60 kg When 10 new students join the class the averag...........

Quantitative Aptitude (MTS) Average

The average weight of 40 students of a class is 60 kg. When 10 new students join the class. the average weight becomes 64

kg. If the average weight of 5 of the new students is 72 kg, then what is the average weight (in kg) of the remaining 5 new

students?

This questions was previously asked in

SSC MTS 14th October 2021 Shift-2

85.5

86.5

- Initially, 40 students have an average weight of 60 kg. So, the total weight of these students is \(40 \times 60 = 2400\) kg.

- After 10 new students join, total students become 50 with an average weight of 64 kg. Thus, the total weight is \(50 \times 64 = 3200\) kg.

- The combined weight of 10 new students is \(3200 - 2400 = 800\) kg.

- Among these 10 new students, 5 have an average weight of 72 kg, so their total weight is \(5 \times 72 = 360\) kg.

- The remaining 5 students weigh \(800 - 360 = 440\) kg.

- Hence, the average weight of these remaining 5 students is \(440 \div 5 = 88\) kg.

- Correct answer is Option 3: 88

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