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The mean weight of a class of 20 student is 48 kg two more weighing 60kg and 58 kg respectively join the class what is the mean weight of class now |
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Answer» Answer: mean WEIGHT = TOTAL weight/total no. of students Or, 48 = total weight/20 Or, total weight = 48×20 = 960 kg New total weight = 960+60+58 = 1078kg New total no. if students = 20+2 = 22 mean = 1078/22 = 49 kg ans. CHECK IT OUT!! |
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