To calculate: The points needed on the final to avetage the points to 75. Given information: Grades in three tests in College Algebra are 87, 59 and 73. The average after final is 75.

Braxton Pugh

Braxton Pugh

Answered question

2020-10-18

To calculate:
The points needed on the final to avetage the points to 75.
Given information:
Grades in three tests in College Algebra are 87, 59 and 73.
The average after final is 75.

Answer & Explanation

Alix Ortiz

Alix Ortiz

Skilled2020-10-19Added 109 answers

Calculation:
Let the grade in the final test be x
Average of n numbers a1+a2+a3++an is given by A=a1+a2+a3++ann
Plugging the values,
A=87+59+73+x4
Given average is 75
Therefore,
75=87+59+73+x4
Multiplying both sides by 4
754=87+59+73+x44
300=219+x
Subtracting 219 from both the sides,
300219=219+x219
81=x
x=81
Therefore the score required in final test to get an average of 75 is 81.

Do you have a similar question?

Recalculate according to your conditions!

New Questions in College algebra

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?