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if the mean weight of a class of 34 student is 42 kg. if the weight of the teacher be included, the weight rises by 400 grams. find the weight of the teacher |
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Answer» total WEIGHT of all students=34*42=1428 after inclusion of teacher =35*42.4=1484 difference bw them=56=weight of teacher. . 7 years agoHelpfull: Yes(3) No(0) ((42*34)+X)/35=42+0.400 if we solve this then x=56 weight of teacher is=567 years AVG of 34 s = 42 hence total weight = 1428 avg 35(34+teacher)=42.4 hence total weight=1484 differnce of two=56 (AGE of teacher)7 years ago IՏ IT ᕼᗴᒪᑭᖴᑌᒪ ? YᗴՏ = ᖴOᒪᒪOᗯ ᑎO = TᕼᗩᑎKՏ |
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