Jontay A.
asked • 03/16/21Algebra word problem
if I scored a 93,87,96 and 89 on my history tests. What grade do I need to make on the 5th test to have an average of at least a 91?
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2 Answers By Expert Tutors
Bradford T. answered • 03/16/21
Tutor
4.9
(29)
Retired Engineer / Upper level math instructor
Average = sum of scores divided by n
91 = (93+87+96+89+x)/5
365 + x = 91(5) = 455
x = 455 - 365 = 90
James C. answered • 03/16/21
Tutor
4.8
(285)
BS in Mathematics with 20+ years of teaching experience
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Jontay A.
Thank you both!!!! You don't understand how difficult this was for me:)03/16/21