Dinheiro na poupança...

Algebra Level 2

Dona Gercina junta dinheiro desde os 15 anos. Hoje ela tem 27 anos. Sendo que ela depositou 450 reais aos 15 anos e a cada ano aumentou 45 reais ao depositado no ano anterior. Qual é o valor total depositado dos 15 aos 27 anos?


The answer is 9360.

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