Math Problem Statement
15.Tiga orang anak yaitu Manar, Norman, dan Opik masing-masing memiliki sejumlah permen. Ketika dua perman Norman dan empat permen Opik diberikan ke Manar, rata- rata jumlah permen mereka adalah 9. Jika permen Opik empat kurangnya dari jumlah permen Manar dan Norman. Jumlah permen Norman setengah dari jumlah permen Opik dan Manar. Selisih permen Opik dan Manar adalah
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
System of Equations
Average Calculation
Formulas
Total after redistribution: (M + 6) + (N - 2) + (O - 4) = 27
M + N + O = 27
O = M + N - 4
N = 1/2(M + O)
Theorems
System of Linear Equations
Substitution Method
Arithmetic Mean
Suitable Grade Level
Grades 9-11
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