Math Problem Statement
Paul and Melissa bought some apple tarts. Paul's bill is $78 and Melissa's bill is $54. Paul bought 4 apple tarts more than Melissa. How many apple tarts did he buy?
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
System of Equations
Formulas
Cost formula: price per tart * number of tarts = total cost
System of equations: p * x = 54 and p * (x + 4) = 78
Theorems
Basic algebraic manipulation
Suitable Grade Level
Grades 6-8
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