Solution - Compound interest (basic)

43900.53

43900.53

Step-by-step explanation

Use $A = P {(1 + r / n)}^{(n t)}$ with $P = 15, 396$ , $r = 5 %$ , $n = 12$ , $t = 21$ .

Compute period rate and exponent: $\frac{r}{n} = 0.0041666667$ , $n t = 252$ , so the growth factor is $2.8514241108$ .

Multiply principal by growth factor: $15, 396$ × $2.8514241108$ = $43900.53$ .

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