Question

Ms. Donahue uses 4 essays as the basis for her grading. Each essay counts as a percent of the final average.

Essay 1 10%
Essay 2 15%
Essay 3 25%
Essay 4 50%

Joel had the following scores for his work: Essay 1, 85; Essay 2, 90; Essay 3, 80; and, Essay 4, 100.

Answer 1

What is Joel's expected final average?
A) 86
B) 89
C) 90
D) 92

Answer 2

I would change all the percents to decimals e.g. 10% becomes 0.10

then multiply each grade by its corresponding decimal. example 0.10*85
add up all 4 results. what do you get ?

Answer 3

E1. 8.5
E2. 13.5
E3.20
E4.50

Answer 4

ok, now add them up, that is the "weighted average"
(notice if all 4 used 25% we would get the usual average)

Answer 5

Correct

Answer 6

92 is what i got when i add them all up

Answer 7

sounds good.

Answer 8

so D?

Answer 9

yes