The average of the marks of maths test of 20 student is 9. If the marks of 5 new students are 9,5,3,2,1 the new average marks is

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20 Apr 2021 AVERAGE The average of the marks of maths test of 20 student is 9. If the marks of 5 new students are 9,5,3,2,1 the new average marks is: OPtion
1) 11
2) 10
3) 9.5
4) 9
5) 8
6) 8.5
7) 7
8) 7.5
9) 5
10) None of the above; Correct Option: 5 Best Solution (2)

Billal Hossain 3 years AGO

Total marks of 20 Students = 20*9=180
New 5 students marks=9+5+3+2+1=20
Then, 25 students marks=180+20=200
Therefore, New average marks =200/25=8
So, My option is (5)

Like? Yes (3) | No

G.S.Kantharao 3 years AGO

Average of 20 is =9
Sum =180
New joinings =9+5+3+2+1=20
Total sum =200
Average =200/25=8
My option is 5👈

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Dimple

India

Punjab

Time: 00:01:33

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The average of the marks of maths test of 20 student is 9. If the marks of 5 new students are 9,5,3,

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20 Apr 2021 AVERAGE