Please help! Frank’s quarter grades are 82.5, 94.7, and 87.9. What grade, rounded to the nearest percent, will Frank have to earn in the last quarter to receive at least a 89% final course grade?

A.
90%

B.
89%

C.
92%

D.
91%

Question

Please help! Frank’s quarter grades are 82.5, 94.7, and 87.9. What grade, rounded to the nearest percent, will Frank have to earn in the last quarter to receive at least a 89% final course grade?
 
 A.
90%
 
 B.
89%
 
 C.
92%
 
 D.
91%

anonymous · Answer

Since the average is at least 89, the total has to be at least 89x4 = 356. the three quarters add up to 265.1. You need at least 90.9 in the fourth quarter which means the answer has to be 91%

anonymous · Answer

Thank you!