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Yes add them and then divide by two to get the avergage speed for the entire journey. This is all you can really do with the info given - ie. no distances or times taken but just the speed either way. Assuming both ways were the same distance! So 36.6665!
bra1ne> you have got a good point though so maybe that could be correct although it doesn't tell you the ditance travelled either way although even though in a mensa question I think this may be a little to complex? But i may well be wrong!
Ed
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Posted: 2002-07-02 22:36:00
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I think the question has some important information that is missing. In this case I would say
both answers are correct....
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Posted: 2002-07-03 10:13:00
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44mph !!!
Must have been on the M25!
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Posted: 2002-07-03 10:39:00
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I thnk bra1ne has a point here. @ed:even f u change d distnce to 44miles dat wud take u 1 hr to travel and at 29.333 mph ur travel tym back is 1.5 hrs. Thats a period of 2.5 hrs at a distance of 88 miles- that wud giv us an ave of 35.2 ryt? Anyway dats how i see it. Ü peace..
This post was posted from a T68i
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Posted: 2002-07-03 10:49:00
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@Pink Lady: Ah.. nice, another one that agrees with bra1ne. We are 3 now
Yon delete your posts yourself by go to "Edit".. and then mark "Delete post". But that option disappears after a certain amount of time. Check if you still can do it...
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Posted: 2002-07-03 11:09:00
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ill go out and drive our car.....
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Posted: 2002-07-03 11:16:00
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>Ba1ne...... ur theory is prob. the best but given the circumstances that we dont know the distance and/or time i would still go with the plus and divide one!!
---------------------------------->Hasse
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Posted: 2002-07-03 11:30:00
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one as in, not divide by one but as the plus and divide theory
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Posted: 2002-07-03 11:33:00
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I would stickt to 36.66 but Brain has a point in his answer!
Another question:
What do you get if you divide 30 by half and then add 10 to it?
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Posted: 2002-07-03 11:36:00
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Pink Lady got it right, it's definitely 35.2
Formula is 2*44*29.33333/(44+29.33333)
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Posted: 2002-07-03 11:56:00
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