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SOMEONE SOLVE THIS!
Posted: 1/14/2006, 1:04 pm
by Rusty
A jet flew from Toronto to Paris at 800km/h and returned at 700km/h. If the total trip not including stopover time was 15hrs, how far is it from Toronto to Paris?
Let x= time traveling to Paris
Let y= time traveling to Toronto
Both variables are in hrs
Equations
1. 15= x+y
2.
A thousand thank yous to whoever solves this!
Posted: 1/14/2006, 1:14 pm
by Soozy
I just tried and failed.
I don't have a maths degree honest.
Posted: 1/14/2006, 1:25 pm
by afealicious
distance = ratextime
Let x represent distance from Toronto to Paris
total time = 15 hrs
(x/800 + x/700=15)*5600 <---if you are wondering why i did that, it is because 5600 is a common multiple 800, 700, and 15.
7x + 8x = 84000
x = 5600
5600km.
Posted: 1/14/2006, 1:27 pm
by saman
1. 15=x+y
15-x=y
2. 800x=700y
1.14x=y
Substitute y from eqn 1:
1.14x=15-x
2.14x=15
x=7
y=15-7=8
800x = 800km/hr x 7hr = 5600km
Similarly,
700y = 700km/hr x 8hr = 5600km
The distance from Toronto to Paris is 5600 km
Posted: 1/14/2006, 1:29 pm
by Kathy
ooh, you beat me. I just finished this on a scrap of paper!
Posted: 1/14/2006, 1:30 pm
by Rusty
Posted: 1/14/2006, 6:15 pm
by starseed_10
afe, that's a great method
i solved it using something like saman, but that's waaay easier
Posted: 1/14/2006, 6:24 pm
by afealicious
heehee yay thanks
Posted: 1/14/2006, 6:47 pm
by starseed_10
i'm turning into such a math geek
Posted: 1/14/2006, 6:50 pm
by afealicious
i'm not turning into enough of one, at school
Posted: 1/14/2006, 6:54 pm
by beautiful liar
starseed_10 wrote:i'm turning into such a math geek
quick!! paint a picture!
Posted: 1/14/2006, 6:55 pm
by beautiful liar
but wait, knowing you it'll be a paint-by-numbers. hmm
Posted: 1/14/2006, 6:58 pm
by starseed_10
Posted: 1/14/2006, 7:02 pm
by afealicious
maybe i should do that.
Posted: 1/14/2006, 7:17 pm
by starseed_10
it's a bird with a suitcase
Posted: 1/14/2006, 7:23 pm
by starseed_10
don't ask what this one is
Posted: 1/14/2006, 7:25 pm
by afealicious
when did you do these
Posted: 1/14/2006, 7:44 pm
by pit_girl1
starseed_10 wrote:don't ask what this one is
BURNINATION!
Posted: 1/14/2006, 8:06 pm
by Axtech
Is that a Bernstein Bear riding the bike?
Posted: 1/14/2006, 8:18 pm
by saman
aaah is it?! i just noticed! i used to love the bernstein's "bike lessons" when i was little.
"come here, small bear, here is something you will like."
"look ma look! a brand new bike!"
