Math, asked by sureshmeena47, 4 months ago

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​

Answers

Answered by preritagrawal08
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 Mrjaiswal09
0

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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