keylincruz201999 keylincruz201999

28-04-2021
Mathematics

contestada

A person swims 11 miles
downriver in the same time
they can swim 7miles
upriver. The speed of the
current is 4 mph, find the speed of the person in still water

Respuesta :

konek02 konek02

28-04-2021

7 / x-4 = 11 / x+4

7x + 28 = 11x - 44

72 = 4x

Answer is x = 16

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