Register

Lynn has grades of 93, 75, and 86 on three math tests. What grade must she make on the next test to have an average of exactly 81 for the four tests?

Lynn has grades of 93, 75, and 86 on three math tests. What grade must she make on the next test to have an average of exactly 81 for the four tests?
55.4k views
3 votes
Lynn has grades of 93, 75, and 86 on three math tests. What grade must she make on the next test to have an average of exactly 81 for the four tests?

User Surui
by
7.2k points

1 Answer

1 vote
(93+75+86+x)/4=81
93+75+86+x=324
The sum of the scores is 324. Now solve for x:
254+x=324
x=70

The answer is 70
User Hassan Mahmood
by
8.7k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories

Other Questions

How do you can you solve this problem 37 + y = 87; y =
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Link Copied!