Question

Roger Waters can scrape up just enough money to rent a canoe for 1 hour and 30 minutes. If he paddles out on a lake at 4 kph and returns at 2 kph, how far will he have paddled the canoe? Show work and table.

Answer 1

If he is continuing paddling then, d = r.tHe has to paddle the same distance back to shore,
4t1 = 2t2  
 t2 = 2t1
The taken to him is the twice he reaches to the dest. off the shoret1 + t2 = 1.5  

Putting the values we get

t1 + 2t1 = 1.53t1 = 1.5
t1 = 0.5t2 = 1
d = 4*0.5
 = 2*1
= 2