Mathematics, 08.01.2020 05:31, tami5

Un niño tarda 90 minutos en
podar un prado, pero su hermana puede podarlo en 60 mi-
nutos. ¿cuánto tardarían en podar el pasto si trabajaran jun-
tos, usando dos podadoras?

Answers: 1

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Un niño tarda 90 minutos en
podar un prado, pero su hermana puede podarlo en 60 mi-
nuto...