SOLUTION: A boat travels upstream and back in 12 hours. If the speed of the boat in still water is 25 kilometers per hour and the current in the river is 10 kilometers per hour, how far upst
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Question 581149: A boat travels upstream and back in 12 hours. If the speed of the boat in still water is 25 kilometers per hour and the current in the river is 10 kilometers per hour, how far upstream did the boat travel?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let the distance the boat travels be x km
upstream speed = 25-10=15 km/h
down stream speed = 25+10 = 35 km/h
Time upstream + time down stream = 12
t=d/r
LCD =105
multiply by the LCD
7x+3x=105*12
10x= 1260
/10
x=126 km
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