Register

Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests?. A. 87 . B. 95 . C. 85 . D.…

Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests?. A. 87 . B. 95 . C. 85 . D.…
asked 208k views
5 votes
Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests?. A. 87 . B. 95 . C. 85 . D. 92

asked
User Nearlymonolith
by
7.8k points

1 Answer

6 votes
An average for the four tests:
Avg = ( 84 + 65 + 76 + x ) / 4
80 = ( 84 + 65 + 76 + x ) / 4 /* 4 ( multiple both sides of the equation by 4 )
320 = 225 + x
x = 320 - 225
x = 95
Answer:
B ) 95
answered
User Natale
by
8.8k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.

Categories

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
Link Copied!