SOLUTION: Mr.Nelson lost one of his students test papers. He knos thar thre other 4 students scored as follows: 12,20,21,12. He know that the average score is 19.4.What the score on the miss
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Question 73299: Mr.Nelson lost one of his students test papers. He knos thar thre other 4 students scored as follows: 12,20,21,12. He know that the average score is 19.4.What the score on the missing paper. Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Mr.Nelson lost one of his students test papers. He knows that the other 4 students scored as follows: 12,20,21,12. He know that the average score is 19.4.What the score on the missing paper
:
Let x = missing paper score: = 19.4
;
Mult equation by 5 and you have:
12 + 20 + 21 + 12 + x = 5(19.4)
:
65 + x = 97
:
x = 97 - 65
:
x = 32 score of the missing paper
:
:
Check: =
: = 19.4
