Dickson Cox
10/18/2023 · Elementary School
Josefina compró una tarjeta telefónica prepagada de US \( \$ 25 \). Con esta tarjeta, las llamadas de larga distancia cuestan 9 centavos por minuto. Josefina us6 la tarjeta una sola vez para hacer una llamada de larga distancia. Si el saldo restante en la tarjeta es US \( \$ 21,94 \), ćuántos minutos durb́ la llamada?
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Josefina gastó \( \$ 3.06 \) en la llamada y cada minuto cuesta \( \$ 0.09 \), por lo que la llamada duró 34 minutos.
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