







Find the speed of the current of the river 
20100519 

paul pose la question : a boat travels 100 miles downstream in the same length of time it travels 50 miles upstream. if the boat's speed in still water is 30 mph find the speed of the current of the river? Penny Nom lui répond. 





The value of 1 acre 
20100513 

Rebecca pose la question : If 38,121 sq feet equals $19,846.58 at 75% of its current value, what would the value of 1 acre be at 100% of value? Penny Nom lui répond. 





Sammy and his motorboat 
20100511 

Jordan pose la question : Sammy owns a motorboat that travels 4 miles/hour in still water. It goes 12 miles upstream and 12 miles back again (downstream) in a total of 8 hours. Find the speed of the current of the river. Penny Nom lui répond. 





Fred in his canoe 
20090221 

Susan pose la question : Fred paddled for 4 hours with a 7 km/hr current to reach a campsite. The return trip against the same current took 9 hr. Find the speed of Fred's canoe in still water. (Remember to include correct units) Penny Nom lui répond. 





Velocity 
20070404 

Jessica pose la question : The speed of the current in a river is 2mph. Jessica travels 20 miles upstream and then 20 miles downstream in a total time of 5 1/3 hr. Find the speed of the boat.
I know you have to use V= d/t, but what is the equation for time because you have to factor in that upstream the boat is slower and downstream the boat is faster? Penny Nom lui répond. 





A point that a group of lines pass through 
20001205 

Ross pose la question : A point that a group of lines pass through is called a________? Chris Fisher lui répond. 





Concurrent Lines in a Triangle 
19980810 

Chris Woolf pose la question : The question is Name four types of concurrent lines, rays, or segments that are associated with triangles. Chris Fisher lui répond. 

