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

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
RELATED QUESTIONS
Mr. Nelson lost one of his student's test papers. He knows that the other 4 students... (answered by Okeke_Christian)

mr. nelson lost one of his students test papers. he knows the other 4 students scored as... (answered by stanbon)

Mr. Jones sold 2 candies at $1.20 each. based on the cost, his profit on one was 20% and... (answered by edjones)

Mr. Edge needs 5 students, who will be arranged from tallest to shortest, for a... (answered by stanbon)

Mr. Edge needs 5 students, who will be arranged from tallest to shortest, for a... (answered by ewatrrr)

Mr. Hughes teaches high school math. He looks young for his age and his students are... (answered by josmiceli)

4. A teacher wishes to determine whether his brightest students (those making the best... (answered by stanbon)

nelson has taken two math test, he studied for 1.5 hours and scored a 78%. on the second... (answered by jim_thompson5910)

Mr. Thibodeaux is teaching probability to his class of 48 students. He has 12 decks of... (answered by stanbon)