justinslusser470 justinslusser470

15-03-2024
Mathematics

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a boat goes 24 km upstream and 35 km downstream in 9 hour. it was goes 30 km upstream and 21 km downstream in 8 hour. the speed of the boat in still water is (in km/h):
a. 8
b. 12
c. 6.5
d. 6

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