Answers FowU - Financial Math - B Business Summary StatisticsQuestion 14

14

QuizMultiple Choice

Business Summary Statistics

Question 14 • FowU - Financial Math - B

Lisa is currently taking physics as one of her electives in school. Her grade at the end of the year is determined by the average of four exams, each worth 100 points. On her first test she got an 84, on her second she got a 92, and on her third an 80. What must she score on her fourth exam to get exactly 80% in the course?

Answer

A

60

B

64

C

84

D

85

Explanation

To average 80 across four exams, Lisa needs a total of 4 × 80 = 320 points. Her first three scores add to 84 + 92 + 80 = 256, so she needs 320 − 256 = 64 on the fourth exam. The correct choice is 64.

AI-written and checked against the verified answer.

More from this Course

24 verified answers

Probability in the Business Setting

23 verified answers

The Business Plan

25 verified answers

Break-Even Analysis