Arithmetic 83094

There were 31 students in the class, and the arithmetic average weight was 43 kg. Calculate the average weight in the class if a student weighing 91 kg has been added to the class.

Correct answer:

a2 =  44.5 kg

Step-by-step explanation:

n1=31 a1=43 kg  m=91 kg  n2=n1+1=31+1=32 s2=a1 n1+m=43 31+91=1424 kg  a2=n2s2=321424=44.5 kg



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