I need more information to solve.
Answer:
i really dont know how to do this
Step-by-step explanation:
Answer: 70
Explain:
80*5 = 400
this tells us that the total scores before
dividing must be 400
400 - (78+88+83+81) = 70
this tells us that we lack +70
in conclusion, to get an average of 80% on Sara's test scores; She must receive a grading of 70% in her next test.
