THE MEAN WEIGHT OF THE CLASS OF 60 STUDENTS IS 40 KG. THE MEAN OF BOYS IS 50 KG WHILE THAT OF GIRLS IS 30KG. FIND THE NO. OF BOYS AND GIRLS IN THE CLASS. s pls help
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no. of boys = 30
no. of girls = 30
as mean of 50 and 30 is 40
no. of girls = 30
as mean of 50 and 30 is 40
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