SOLUTION: Eric wants to earn 92 final average on his math class the score on his first five tests are 85 82 95 97 98 what must Eric score on his last test to earn a 92 on average

Algebra.Com
Question 1081804: Eric wants to earn 92 final average on his math class the score on his first five tests are 85 82 95 97 98 what must Eric score on his last test to earn a 92 on average
Found 2 solutions by treeman183, MathTherapy:
Answer by treeman183(1)   (Show Source): You can put this solution on YOUR website!
Imagine all number as 92. 92,92,92,92,92,92.You have to make these numbers 82,85,95,97,98 and one other number. To start, you move the numbers around. If you add to one number, subtract that from the other. 85,99,92,92,92,92. Then, 85,82,109,92,92,92. Then, 85,82,95,106,92,92. After, 85,82,95,97,101,92. Lastly, 85,82,92,97,98,95. This shows that Eric has to get a 95 to get an average of 92 for test scores
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Eric wants to earn 92 final average on his math class the score on his first five tests are 85 82 95 97 98 what must Eric score on his last test to earn a 92 on average 
Let final score needed, be F

Then we get: 

Add, cross-multiply and then solve for F, the final score. 

RELATED QUESTIONS


Marcus wants to end the semester with at least an 85 test average in his math class. On... (answered by fractalier)

Joe has scored 87, 92, and 82 on his first three exams in his math class. If the standard  (answered by solver91311)

Daniel wants to have a 90 average in his math class at the end of the year. He is trying... (answered by jim_thompson5910)

Annie scored a 95,87,85,93, and a 94 on his first 5 math tests. if he wants a 90 average... (answered by josmiceli)

Larry's average (arithmetic mean) score on the first four of five tests is 88. If Larry... (answered by alicealc)

Nomar has earned scores of 73, 85, 91 and 82 on the first four out of five math tests for  (answered by scott8148,1510112)

Ray had scores of 75, 82, 94 and 77 on his first four math tests. What must  he score on... (answered by TimothyLamb)

manuel has scores of 77 82 89 89 and 92 on 5 class exams. his final exam is going to... (answered by bucky)

Peter wants his math average to be above 85 for the year. If his average is for the first  (answered by stanbon)