Mean weight of students in a class is 48 kg. If men weight of girl students is 40 kg. and that of bo
is 60 kg. Find (a) % age of boys and girls (b) If there are total of 75 students, find number of eac
Mean of a series with 50 terms to 80. But afterwards it was noted that three terms 63, 47 and
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20 students with a average weight of 48 kg. = 960 kg.
2 other student join with weights of 60 and 58 = combine weight of 118 kg
960 kg + 118 kg =1,078 kg divide by 22 = Mean weight of class is now 49 kg.
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