12-09-2019
Mathematics

contestada

It takes a boy 20 minutes to mow the lawn, but his sister can mow it in 60 minutes. How long would it take them to mow the lawn if they worked together, using two lawn mowers?

Respuesta :

fish373737 fish373737

12-09-2019

Answer:

40

Step-by-step explanation:

because am smart and i said so

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