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In Bobby’s school, math grades for the year are calculated from assignments, tests and a final exam. Assignments count 30%, tests 20%, and the final exam 50%. If Bobby has an assignment grade of 85, a test grade of 72, and an exam of 61, what is Bobby’s overall grade?

A. 70.4%
B. 71%
C. 71.4%
D. 72.67%

Respuesta :

Answer:

A) Bobby's overall grade is 70.4%

Step-by-step explanation:

To solve this problem we must calculate the percentages each grade represents from the overall grade. Therefore:

assignment = 85*30% = 85*30/100 = 25.5%

tests = 72*20% = 72*20/100 = 14.4%

exam = 61*50% = 61*50/100 = 30.5%

total = assignment + tests  + exam

total = 25.5 + 14.4 + 30.5 = 70.4

Bobby's overall grade is 70.4%. Therefore the correct answer is A).

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