Question

1. quarter grades are calculated as shown below. what is the students average for the quarter?

	weight	category average
homework	15%	100%
quizzes	25%	82%

the students average for the quarter is
round your answer to the nearest percentage point.

Explanation:

Step1: Convert weights to decimals

$60\% = 0.6$, $15\%=0.15$, $25\% = 0.25$

Step2: Calculate weighted - average

$0.6\times70 + 0.15\times100+0.25\times82$
$=42 + 15+20.5$
$=77.5$

Answer:

$78$