+30 Mandy wants to earn a 90% overall average in her mathematics class. She has grades of 87, 77, and 94 thus far in the course. What grade does Mandy need to average on the next two assessments to earn a 90% overall average?
It says to round to the nearest whole numbers as needed
+129899 Easy to solve these
She currently has 87 + 77 + 94 = 258 points
She needs 5(90) = 450 points for a "90" average
So....on the next two tests....she needs 450 - 258 = 192 points
So....she needs to average 192 / 2 = 96 on the next two tests
+220 First, multiply 90 by 5 to get 450. Next, evaluate 450-87-77-94. That gets us a total of 192. After that, divide that by 2 to get the average total grade needed to get a 90% average.
Mandy needs to get an average of 96% on her 2 tests to get a 90% average on her 5 tests.
~~Hypotenuisance
