You row upstream at a speed of 2 miles/hour. You travel the same distance downstream at a speed of 5 miles/hour. What would be your rowing speed in still water? What is the speed of the current?
a) 3 mph and 2 mph
b) 3.5 mph and 1.5 mph
c) 7 mph and 2 mph
d) 3.5 mph and 2.5 mph

Question

You row upstream at a speed of 2 miles/hour. You travel the same distance downstream at a speed of 5 miles/hour. What would be your rowing speed in still water? What is the speed of the current?
a) 3 mph and 2 mph
b) 3.5 mph and 1.5 mph
c) 7 mph and 2 mph
d) 3.5 mph and 2.5 mph

hero · Answer

let r = rate of travel up or down stream
let b = speed of boat
let c = speed of current

r = (b ± c)

Upstream

b - c = 2

Downsteam
b + c = 5

Solve the system

anonymous · Answer

Thank you!!

hero · Answer

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