SOLUTION: Steven left Town A and walked towards Town B at a speed of 100m/min. At the same time, Jason and Melvin started from Town B and walked towards Town A at a speed of 80m/min and 75m/

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: Steven left Town A and walked towards Town B at a speed of 100m/min. At the same time, Jason and Melvin started from Town B and walked towards Town A at a speed of 80m/min and 75m/      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 389197: Steven left Town A and walked towards Town B at a speed of 100m/min. At the same time, Jason and Melvin started from Town B and walked towards Town A at a speed of 80m/min and 75m/min respectively. If Steven met Melvin six minutes after passing Jason, find the distance between Town A and Town B.
Found 2 solutions by mananth, josmiceli:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Steven left Town A and walked towards Town B at a speed of 100m/min. At the same time, Jason and Melvin started from Town B and walked towards Town A at a speed of 80m/min and 75m/min respectively. If Steven met Melvin six minutes after passing Jason, find the distance between Town A and Town B.
...
Steven ----- 100m/min
...
Jason--------80m/min
...
Melvin-------75m/min
......
Let distance between towns be x m
Steven ----- 100m/min
Jason--------80m/min
combined speed = 180 m.min
Time taken = x/180 minutes.
...
Steven ----- 100m/min
Melvin-------75m/min
combine speed = 175 m/min
..
Time = x/175
...
Difference in time of meeting = 6 minutes.
x/175 - x/180 = 6
(180x-175x)/175*180=6
5x=175*180*6
5x=189,000
/5
x= 37,800 meters
OR 37.8 km
...
m.ananth@hotmail.ca

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Stephen meets Jason in t min
Stephen went d%5B1%5D m and
Jason went d%5B2%5D m
I can write 2 equations:
d%5B1%5D+=+100t m
d%5B2%5D+=+80t m
Now add the equations:
d%5B1%5D+%2B+d%5B2%5D+=+180t m
Let d%5B1%5D+%2B+d%5B2%5D+=+d, the distance between the towns
d+=+180t
In 8 more min, stephen goes d%5B3%5D+=+100%2A8 m further
d%5B3%5D+=+800 m , so he went d%5B1%5D+%2B+d%5B3%5D+=+100t+%2B+800
total distance to meet Melvin
Now I want to know how far Melvin went in t+%2B+8 min
He went d%5B4%5D+=+75%2A%28t+%2B+8%29 m
d%5B4%5D+=+75t+%2B+600 m
Note that d%5B1%5D+%2B+d%5B3%5D+%2B+d%5B4%5D+=+d the distance between the towns
d+=+100t+%2B+800+%2B+75t+%2B+600
and, from before, I said d+=+180t, so
180t+=+175t+%2B+1400
5t+=+1400
t+=+280
and, if d+=+180t
d+=+180%2A280
d+=+50400 m
The distance between towns A and B is 50.4 km
check answer:
d%5B1%5D+=+100t
d%5B1%5D+=+100%2A280
d%5B1%5D+=+28000 m
and
d%5B2%5D+=+80t
d%5B2%5D+=+80%2A280
d%5B2%5D+=+22400
d%5B1%5D+%2B+d%5B2%5D+=+28000+%2B+22400 m
d+=+50400 m
OK
d%5B3%5D+=+800 m
d%5B1%5D+%2B+d%5B3%5D+%2B+d%5B4%5D+=+28000+%2B+800+%2B+75t+%2B+600
d+=+28000+%2B+800+%2B+75%2A280+%2B+600
d+=+28800+%2B+21000+%2B+600
d+=+50400
OK