ineedhelp109
ineedhelp109
12-04-2017
Mathematics
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please answer the question below
Respuesta :
irspow
irspow
12-04-2017
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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