There are 6 units in an exam course.
Each unit is marked out of 100
To get grade A, the mean...
Mathematics, 25.05.2021 21:10 treytonmesser
There are 6 units in an exam course.
Each unit is marked out of 100
To get grade A, the mean mark of all six units must be at least 80
Tom has taken five units. His mean mark is 78
To get grade A, how many marks must he get on the last unit?
Answers: 3
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