SOLUTION: a race-boat covers a distance of 66 km downstream in 110 mintures. it covers this distance upstreams in 120 minutes. the speed of the boat in still water is 34.5 km/hr.find the spe
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Question 236203: a race-boat covers a distance of 66 km downstream in 110 mintures. it covers this distance upstreams in 120 minutes. the speed of the boat in still water is 34.5 km/hr.find the speed of the steam
this quest is related to this problem
http://www.algebra.com/algebra/homework/coordinate/Linear-systems.faq.question.102734.html
i do not no which type this algebra is
the textbook says (equations in one variable) if any mod can move this in right place pls do so Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! a race-boat covers a distance of 66 km downstream in 110 minutes. it covers this distance upstreams in 120 minutes. the speed of the boat in still water is 34.5 km/hr.find the speed of the steam
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Downstream DATA:
distance = 66 km ; time = 110 min ; rate = d/t = 66/110 = 0.6 km/min
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Upstream DATA:
distance = 66 km ; time = 120 min ; rate = 66/120 = 0.55 km/min
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Note: 34.5 km/hr = 0.575 km/min
Rate equations:
c + 0.575 = 0.6 where "c" is the rate of the current.
c = 0.025 km/min
OR
c = 60*0.025 km/hr = 1.5 km/hr
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Cheers,
Stan H.
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