Math Problem Statement
Amila, Babu and Christy earn a total of Rs. 970 per week as the take home salary. Amila's take home salary plus twice each of the other's is Rs. 1640. Christy's take-home salary plus twice each of the other's is Rs. 1600. Using the matrices, find the take home salary of each.
Solution
Let the take-home salaries of Amila, Babu, and Christy be denoted by , , and respectively.
System of Equations:
We can translate the given information into the following system of equations:
-
The total salary:
-
Amila's salary plus twice each of the others:
-
Christy's salary plus twice each of the others:
Step 1: Matrix Representation
We can represent this system of equations as a matrix equation , where:
1 & 1 & 1 \\ 1 & 2 & 2 \\ 2 & 2 & 1 \end{pmatrix} \begin{pmatrix} A \\ B \\ C \end{pmatrix} = \begin{pmatrix} 970 \\ 1640 \\ 1600 \end{pmatrix}$$ ### Step 2: Solving the Matrix Equation Now, we will solve this system of equations using the matrix method. I'll calculate the solution.Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Matrix Algebra
Formulas
System of linear equations: A + B + C = 970, A + 2B + 2C = 1640, 2A + 2B + C = 1600
Matrix equation: AX = B
Theorems
Matrix inversion theorem
Cramer's rule
Suitable Grade Level
Grades 9-12
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