the mark is obtained by 5 student is 162 .if the marks is obtained by 4 student of them are170 , 184, 190 and 142 find the marks is obtained by 5th student
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0
Answer:
124
Step-by-step explanation:
let the 5th student's no. be x
mean = sum of all/ no. of all
162=(170+184+190+142+x)/5
162=(686+x)/5
162×5=686+x
810-686=x=124
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Answered by
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Step-by-step explanation:
average marks obtained by 5 students = 162
Let marks obtained by 5th student = x
Average = sum of marks obtained / total students
162 = (170+184+190+142 + x) /5
162 x 5 = 170+184+190+142 + x
810 = 686 + x
686+ x = 810
x = 810-686
x = 124
5th student obtained marks = 124
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