Vegetable 2616

Danka was supposed to dig a vegetable patch in the garden. She would have carved it in 1.5 hours if she had worked alone. If her sister Hanka were to cut it alone, she would carve it in 0.75 hours. How long would it take them to weed the garden together?

Correct answer:

t =  30 min

Step-by-step explanation:


(1/1.5+1/0.75)·(t/60)=1

2t = 60


t = 60/2 = 30

t = 30

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