| T O P I C R E V I E W |
| JanieW |
Posted - 13/12/2012 : 18:14:30
A night train from London to Edinburgh leaves at 2321 and arrives 0651.
a) How lomg does the journey take?
b) The distance is 644 km.
Find the average speed of the train in km per hour.
To One decimal place |
| 16 L A T E S T R E P L I E S (Newest First) |
| badwool |
Posted - 14/12/2012 : 09:45:54
Maths teacher fail :-P |
| Redd |
Posted - 13/12/2012 : 21:44:50
Oops... Sorry! |
| reptilemadd |
Posted - 13/12/2012 : 21:37:17
Typical Kelf gets the credit for my work lol I feel like I'm back at school lol.
I demand justice Kelf your mojave female should make me feel better    |
| herriotfan |
Posted - 13/12/2012 : 21:35:33
I missed the train altogether so I'm still stuck in London!!!!! |
| Kelfezond |
Posted - 13/12/2012 : 19:38:04
No mine was wrong too lol |
| Redd |
Posted - 13/12/2012 : 19:33:00
Damn you Kelf! Just realised you had it!
Still, everyone hates a maths teacher more now right? |
| Redd |
Posted - 13/12/2012 : 19:31:21
Afraid you're all wrong... Sort of...
Whilst most of you have got the length of journey right, youve not read the question... Accuracy needed was 1 decimal place, therefore the average speed is 85.9km/ph (1dp).
Everyone hates a maths teacher right?? |
| chrisc |
Posted - 13/12/2012 : 18:56:50
im not even going to attempt to work that out.
my last year at school i spent all my math's lesson's chucking paper plane's out the window at the cleaners |
| badwool |
Posted - 13/12/2012 : 18:52:29
Fairly simple to solve;
Between 23:21 and midnight is 39 minutes
Add this to 6hours and 51 minutes by first adding the minutes (39 + 51 = 1hr 30)
Then add the 6 hours gives you 7 hours and 30 minutes.
The final bit is easy as you are diving the distance by the time taken sooo;
644km divided by 7.5 which gives you = 85.86 as your average speed
Assuming my answer is right....if not ignore all the above :P
|
| badwool |
Posted - 13/12/2012 : 18:48:27
7 hrs 30 mins is the journey time
85.85km/h is the speed. |
| Kelfezond |
Posted - 13/12/2012 : 18:33:05
quote:
Originally posted by JanieW
hehe cool thankyou xx
Damn I hate maths lmao
Most people do lol
I LOVE it - I'm just not that good at it lol xD |
| Kelfezond |
Posted - 13/12/2012 : 18:32:09
My train cut the journey an hour early by not stopping at each station ;-) lol |
| JanieW |
Posted - 13/12/2012 : 18:32:00
hehe cool thankyou xx
Damn I hate maths lmao |
| Kelfezond |
Posted - 13/12/2012 : 18:28:17
Sorry yeah 7 and a half hours not 6 - which makes my speed wrong too xP foolish man |
| reptilemadd |
Posted - 13/12/2012 : 18:26:44
This is probably a trick question but, 7.5 hours and 85.9kph |
| Kelfezond |
Posted - 13/12/2012 : 18:25:51
Speed 102.15 km/h
Time taken 6 hours 30 minutes
Though I coukf be wrong lol |
