The mean weight of 360 students in a school is 50 kg. The mean weight of boys is 60kg and that of girls is 45 kg. Find the no. of boys in the school.
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The mean weight of 180 students in a school is 50 kg. The mean weight of boys is 60 kg, while that of girls is 45 kg. Find the number of boys and girls in the school.
- 80 ,100
- 70, 110
- 65 115
- ✔60, 120 this the ANSWER 60,120
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60 boys 120 girls
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