SOLUTION: A riverboat can head 320 miles upriver in 20 hours, but the return trip takes only 16 hours. Find the current of the river and find the speed of the riverboat in still water.

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Question 278034: A riverboat can head 320 miles upriver in 20 hours, but the return trip takes only 16 hours. Find the current of the river and find the speed of the riverboat in still water.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
16(r+c)=320
20*(r-c)=320
r+c=20
r-c=16
2r=36
r=18 c=2
check
16*20=20*16
ok