Mathematics
Mathematics, 22.09.2019 23:30, persis52

Tl
4. tres barredoras recolectan la basura de 20 calles a la redonda del centro histórico al mismo
tiempo, en un lapso de 8 horas. si se descompone la barredora a, entonces by c realizan el
trabajo en 12 horas, pero si se averían a y b, la barredora c lo hace en 18 horas. responde:
a) ¿cuánto tardan, por separado, las barredoras a y b en realizar la limpieza?
b) si en una hora la barredora a limpia 72 m² de superficie, ¿cuál es la superficie total de las
calles que barren a, b y c?
c)¿cuántos metros cuadrados asea por hora cada barredora b y c?

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4. tres barredoras recolectan la basura de 20 calles a la redonda del centro histórico al m...

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