Math Problem Statement
Maya is signing her daughter up for summer activities. Some of the activities cost $10, and some of them cost $20. Maya pays a total of $130 for 9 activities. How many of each activity did she sign her daughter up for?
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
System of Equations
Linear Equations
Formulas
x + y = 9
10x + 20y = 130
Theorems
-
Suitable Grade Level
Grades 6-8
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