Question

Melinda first two test grades are 87 and 94. what,does she need to get on her third test to maintain at least an average of 90?

Answer 1

Hello,

Melinda first two test grades are 87 and 94. what, does she need to get on her third test to maintain at least an average of 90?

she will need at least an 89 to get the perfect 90
and she'll need 90 or above to get a higher grade than 90

hope this help you

Answer 2

87+94+x
------------ ≥ 90, or
       3

87+94+x ≥ 270, or x≥89 (answer)