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Total Income is $\"\"$ .

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Rate of interest $\"\"$ .

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Time period is six months .

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Therefore, $\"\"$ years .

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Find the total amount when compounded monthly.

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$\"\"$ .

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For monthly compounded $\"\"$ .

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Substitute all the values in the equation.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore,the principal income is $\"\"$ .

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The principal income is $\"\"$ .

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