SOLUTION: A boat can travel from its dock to a town down river with a 7 mile per hour current in 10 hours. The return trip against the same current takes 15 hours. What is the speed of the b

Question 40002: A boat can travel from its dock to a town down river with a 7 mile per hour current in 10 hours. The return trip against the same current takes 15 hours. What is the speed of the boat still in the water?
____ miles per hour
thanx
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A boat can travel from its dock to a town down river with a 7 mile per hour current in 10 hours. The return trip against the same current takes 15 hours. What is the speed of the boat still in the water?
____ miles per hour

Down River Data:
Distance = ?; Time=10 hrs.; Rate= boat speed + 7
------------------
Up River Data:
Distance = ?; Time=15 hrs; Rate = boat speed - 7
EQUATION:
distance down = distance up
and distance = rate(time)
10(boat speed +7) = 15(boat speed -7)
10boat +70 = 15boat-105
5boat=175
boat=35 mph
Cheers,
Stan H.
RELATED QUESTIONS
A boat can travel from its dock to a town downriver with a 7 mph current in 10 hours. The (answered by Grinnell)

Two boys in a boat with a small motor are able to travel 2 mph faster with the current... (answered by TimothyLamb)

A small boat took 2 hr to travel Downstream with the four mile per current the return... (answered by josgarithmetic,ikleyn)

a boat travel downstream to a park in 3 hours and return to its dock in 5 hours. I fthe... (answered by ewatrrr)

In a given river,the current is 6miles per hour. A certain riverboat can travel 18 miles... (answered by mananth)

A boat takes 1 hour to travel 12 miles down river (with the current). Against the same... (answered by ikleyn)

A boat travels upstream, against the current, at 4 miles per hour. The return trip, the... (answered by jorel1380)

A boat took 2 hours to make a trip down river. The same boat took 10 hours to make the... (answered by ankor@dixie-net.com)

A boat takes a trip upriver against the current in 6 hours. Coming back down river, the... (answered by josmiceli)