Problema Solution
Alicia can row 4 miles downstream in the same time it takes her to row 2 miles upstream. She rows downstream 5 miles/hour faster than she rows upstream. Find Alicia's rowing rate each way. Round your answers to the nearest tenth.
Answer provided by our tutors
let rate of rowing = x miles/hr.
rate of stream = y miles/hour..
dowmstream = x+y
upstream = x-y
x+y = x-y+5
=> y=5/2
4/(x+y) = 2/(x-y)
=> 2x - 2y = x+y
=> x = 3y
=> x = 15/2 = 7.5
downstream = 10 miles/hr
upstream = 5 miles/hr