Mathematics, 10.03.2021 21:30 bullockarwen
"Si mezclamos un tipo de café de 576 peniques la libra con otro de 744 peniques la libra conseguimos 24 libras de café, que se vende a 646 peniques la libra. ¿Qué cantidad de cada clase de café se ha mezclado?
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"Si mezclamos un tipo de café de 576 peniques la libra con otro de 744 peniques la libra conseguimos...
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