Question

The mean weight of 120 students in a class is100 kg.
The mean weight of boys is 110 kg
of the girls is 90 kg.
The number of boys and girls inthe class are​

Answer 1

Answer:

112 +82=194

Step-by-step explanation:

120 students so, 10% of 120 is 12 so,

boys = 100 (weight of 120 students) + 12 =112

girls = 100 (weight of 120 students) - 12 =82

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