SOLUTION: Debbie has just enough money to rent a canoe or 1-1/2 hrs. How far out on a lake can she paddle and return on time if she paddles out at 2km/h and back at 4km/h?

Question 406650: Debbie has just enough money to rent a canoe or 1-1/2 hrs. How far out on a lake can she paddle and return on time if she paddles out at 2km/h and back at 4km/h?
Answer by ptaylor(2198) (Show Source): You can put this solution on YOUR website!
Distance(d) equals Rate(r) times Time(t) or d=rt; r=d/t and t=d/r
Let d = distance that she travels out and also distance she travels back
d(out)=d(back)=d
t (out)=d/2
t(back)=d/4
Now we are told that t(out) + t(back) =1.5 hrs
soooo
d/2+d/4=1.5
2d/4+d/4=1.5
3d/4=1.5 multiply each side by 4
3d=6
d=2 mi
CK
t(out)=2/2=1 hr
t(back)=2/4=0.5 hr
1.5=1.5
Hope this helps-----ptaylor

RELATED QUESTIONS
Jennifer Chan has just enough money to rent a canoe for 2 1/2 hours. How far out on the... (answered by stanbon)

Jenna has just enough money to rent a canoe for 1.5 hours. How far out on a lake can she... (answered by stanbon)

Kelly has just enough money to rent a canoe for 2.5 hours. How far out on the lake can... (answered by stanbon)

ollie Carr has just enough money to rent a canoe for 1 1/2 hours. how far out on a lake... (answered by mmm4444bot)

I have two problems that I can't solve. Thank you! 1.Roger Waters can scrape up just... (answered by stanbon)

Rita Rowen can paddle her canoe up river at 3 miles per hour and she can paddle her canoe (answered by stanbon)

2.A local landscape company had a 1-week sale. On Monday,Mrs.Jones had $82 to... (answered by stanbon)

A woman can hike 1 mph. faster down a trail to Cochita Lake than she can on the return... (answered by Theo)

kathryn made a trip to her cabin on the lake and back. On the trip there she drove 40.5... (answered by josmiceli)