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A student has gotten the following grades on his tests. What is the minimum grade he must get on the last test in order to have an average of 81​? 71​, 96​, 90​, 73 The minimum grade he must get on the last test in order to have an average of 81 is ?. ​(Simplify your​ answer.)

Respuesta :

mumsy
In order to get an 81 average, 
the student has to get 81x5=405

71+96+90+73+?=405
330+?=405
405-330=75
he needs to get an 75

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