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asked Sep 24, 2018 56.9k views

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Lmanners · Answer 1 · 2018-09-30T12:01:05+0000

20/t=v and 12/t=(v-4) solve both for t

t=20/v and t=12/(v-4) since t=t

20/v=12/(v-4) cross multiplying...

20v-80=12v

8v-80=0

8v=80

v=10mph

The outbound speed was 10mph

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