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| Math Central | Quandaries & Queries |
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Question from Nicole, a student: You head downstream on a river in a canoe. You can paddle at 6 km/h and the river is flowing at 2.4 km/h. How far downstream will you be in 55 minutes? |
Hi Nicole,
There are two forces carrying you downstream. One is the force of the current which carries you at 2.4 km/hr and the second is the force of you paddling which carries you at 6 km/hr. Together they carry you at 2.4 + 6 = 8.4 km/hr. Thus in one hour you go 8.4 km. There are 60 minutes in an hour. How far do you go in a minute? How far do you go in 55 minutes?
Penny
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