Solution - Compound interest (basic)

23716.57

23716.57

Step-by-step explanation

Use $A = P {(1 + r / n)}^{(n t)}$ with $P = 21, 685$ , $r = 1 %$ , $n = 1$ , $t = 9$ .

Compute period rate and exponent: $\frac{r}{n} = 0.01$ , $n t = 9$ , so the growth factor is $1.0936852727$ .

Multiply principal by growth factor: $21, 685$ × $1.0936852727$ = $23716.57$ .

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Compound interest appears in savings, loans, and investments. Understanding it builds strong financial literacy.