2.9(2) Weighted Averages

Mark wants to calculate his calculus grade. The teacher's policy is that the tests count 40%, quizzes 20%, homework 10%, projects 15% and the final exam is 15%. If Marks's test average is 92, his quizzes are 95, his homework is 100, projects 90 and final exam is 92, what will his final grade in the class be?

• 93.6

• 93.7

• 93.1

• 93.8

Tags

CCSS.8.EE.C.7B

BUSINESS Mrs. Winship sells chocolate fudge for $7.50 per pound and peanut butter fudge for $7.00 per pound. The total number of pounds sold on Saturday was 146 and the total amount of money collected was $1065. How many pounds of each peanut butter fudge were sold?

• 86 lbs

• 5.07 lbs

• 60 lbs

• 4.3 lbs

Tags

CCSS.8.EE.C.8C

A chemist needs a 30% iron alloy. How many grams of a 70% iron alloy must be mixed with 16 grams of a 20% iron alloy to obtain the required

30% alloy?

• 28 grams

• 20 grams

• 12 grams

• 4 grams

Tags

CCSS.HSA.CED.A.1

A history professor weights his grades as follows:

Tests 50%

Attendance 25%

Final exam 25%

If Susy earned an average of 91 on her tests, 80 on her attendance and 85 on her final exam, what will her final grade in the class be?

• 85.33

• 85

• 86.75

• 83.75

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.SSE.A.1