$A$ trust fund has Rs. $30,000$ that must be invested in two different types of bonds. The first bond pays $5 \%$ interest per year,and the second bond pays $7 \%$ interest per year. Using matrix multiplication,determine how to divide Rs. $30,000$ among the two types of bonds if the trust fund must obtain an annual total interest of Rs. $2000$.

  • A
    $5000$ and $25000$
  • B
    $10000$ and $20000$
  • C
    $15000$ and $15000$
  • D
    $20000$ and $10000$

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