Respuesta:
40 dias
Explicación paso a paso:
20 albañiles -------------> 30 dias
15 albañiles --------------> x dias
20 . 30 = 15 . x
600 = 15x
40 = x
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Respuesta:
40 dias
Explicación paso a paso:
20 albañiles -------------> 30 dias
15 albañiles --------------> x dias
20 . 30 = 15 . x
600 = 15x
40 = x