#975 · Algebra · Systems

Rowing Stream Times

A crew can row a certain course up stream in $84$ minutes; they can row the same course down stream in $9$ minutes less than they could row it in still water: how long would they take to row down with the stream?

~12 minAnswer checked instantlyword problemsspeed and distancequadratic equations

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. II. Proportion, Examples II, No. 26

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Checked against the answer in H. S. Hall & S. R. Knight, Higher Algebra (1891).