28 miles downstream in 2 hours 12 miles upstream in 3 hours what would the be speed in still water

Answer 1

if boat speed is b and water speed is w,

28/(b+w) = 2
12/(b-w) = 3

b=9, w=5

check: 28/9 = 2 and 12/4 = 3

Answer 2

oops 28/14=2