melissakm77
28.07.2019 •
Mathematics
It takes sally 4 hours to deliver newspapers. if kathy works alone, it takes her 6 hours. how long would it take them working together to deliver all of the newspapers?
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Ответ:
Kathy's rate is 1/6 job per hour.
Can you solve the rest? Scroll down if you can't!
1/4 + 1/6
= 3/12 + 2/12
= 5/12
5/12 x 6 = 30/60.
It will take them half an hour combined.
Ответ:
is it 1 + 2=3. are is it 2+1=3. are you a boy are not