SOMEONE SOLVE THIS!

Rusty · Post by **Rusty** » 1/14/2006, 1:04 pm

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!

Soozy · Post by **Soozy** » 1/14/2006, 1:14 pm

I just tried and failed.

I don't have a maths degree honest.

:eek:

afealicious · Post by **afealicious** » 1/14/2006, 1:25 pm

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.

Post by **saman** » 1/14/2006, 1:27 pm

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

Kathy · Post by **Kathy** » 1/14/2006, 1:29 pm

ooh, you beat me. I just finished this on a scrap of paper!

Rusty · Post by **Rusty** » 1/14/2006, 1:30 pm

A thousand thankyous!!! :love:

starseed_10 · Post by **starseed_10** » 1/14/2006, 6:15 pm

afe, that's a great method :clap:

i solved it using something like saman, but that's waaay easier

afealicious · Post by **afealicious** » 1/14/2006, 6:24 pm

heehee yay thanks :love:

starseed_10 · Post by **starseed_10** » 1/14/2006, 6:47 pm

i'm turning into such a math geek :wall:

afealicious · Post by **afealicious** » 1/14/2006, 6:50 pm

i'm not turning into enough of one, at school :crying:

beautiful liar · Post by **beautiful liar** » 1/14/2006, 6:54 pm

starseed_10 wrote:i'm turning into such a math geek

quick!! paint a picture!

beautiful liar · Post by **beautiful liar** » 1/14/2006, 6:55 pm

but wait, knowing you it'll be a paint-by-numbers. hmm :think:

starseed_10 · Post by **starseed_10** » 1/14/2006, 6:58 pm

afealicious · Post by **afealicious** » 1/14/2006, 7:02 pm

maybe i should do that.

starseed_10 · Post by **starseed_10** » 1/14/2006, 7:17 pm

it's a bird with a suitcase :nod:

starseed_10 · Post by **starseed_10** » 1/14/2006, 7:23 pm

don't ask what this one is

afealicious · Post by **afealicious** » 1/14/2006, 7:25 pm

when did you do these :lol:

pit_girl1 · Post by **pit_girl1** » 1/14/2006, 7:44 pm

starseed_10 wrote:don't ask what this one is

BURNINATION!

Axtech · Post by **Axtech** » 1/14/2006, 8:06 pm

Is that a Bernstein Bear riding the bike? :GASP:

Post by **saman** » 1/14/2006, 8:18 pm

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!"