Calvin wants to earn an average grade of 90% in his Algebra class.He already has the following scores on assignments:90%,95%,85%,80%,97%.What mist he score on his next assingment to earn the average he wants?
Total of the 5 assignments = 90 + 95 + 85 + 80 + 97 = 447
If he wants an average of 90% for 6 assignments, he needs a total score of 90 x 6 = 540
To achieve the average score of 90%, he needs to score 540 - 447 for his 6th assignment.
540 - 447 = 93%
----------------------------------------------------------------------------- Answer: He must score 93% for the next assignment. -----------------------------------------------------------------------------
