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Simple interest is calculated only on the original principal, not on accumulated interest. It grows linearly with time, unlike compound interest which grows exponentially.

Guia passo a passo

  1. 1Interest I = P × r × t
  2. 2Total amount A = P + I = P(1 + rt)
  3. 3r must be in decimal form (5% = 0.05)
  4. 4t must be in years

Exemplos resolvidos

Entrada
$1,000 at 5% for 2 years
Resultado
$100 interest
A = $1,100
Entrada
$500 at 3% for 18 months
Resultado
$22.50 interest
t=1.5 years

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