Math Problem Statement
You have taken four tests in math class so far. You earned 80%, 75%, 90% and 86% on the first four tests. What do you need to score on the fifth test so that your average score is 83%
Solution
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Math Problem Analysis
Mathematical Concepts
Averages
Algebra
Basic Arithmetic
Formulas
Average formula: (sum of scores) / (number of tests)
Equation setup: (80 + 75 + 90 + 86 + x) / 5 = 83
Theorems
Linear Equations
Suitable Grade Level
Grades 6-8