Math, asked by Nandhuchenkal8525, 1 year ago

The mean weight per student to first 8 students is 65 and that last 8 student is 73kg .if the mean weight per student of 15 student is 69.find the weight of the 7th student

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Answered by rajma1

0

73 ×8,65×8then 15×69-the first total of 73×8and 65×8. please mark me as brain list

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