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+--- Thread: Puzzle a Day! (/showthread.php?tid=1275)
RE: Puzzle a Day! - Veggie - 10-05-2023
(06-05-2023, 07:15 PM)Veggie Wrote: How about this one?Come on, somebody must be able to do this one!
To get to the airport, I must travel at 60km/hr. Due to bad traffic, I discover that when I am half way there, I have only averaged 30km/hr.
How fast must I go for the second half of my journey to achieve my overall speed of 60km/hr?
RE: Puzzle a Day! - MartinH - 10-05-2023
It seems to me that you'd have to do the second half in zero time. That can't be right.
RE: Puzzle a Day! - Veggie - 10-05-2023
Its the right answer, Martin.
The explanation :- Going half the distance at half the speed uses up all the time available! I would have to cover the last half of the journey instantly to get up to the desired average.
RE: Puzzle a Day! - JJB - 11-05-2023
That's far too cerebral for me.
RE: Puzzle a Day! - MartinH - 11-05-2023
It's easier to see if you put actual numbers in.
Assume the airport is 60km away. This means you have an hour to get there.
If you get half way at 30km an hour, it's taken you an hour already. There's no time left.
RE: Puzzle a Day! - Veggie - 11-05-2023
That's how I "explained" it to myself but I went with 120 km so that I wouldn't get confused with the km/h.
RE: Puzzle a Day! - Mark_Riga - 11-05-2023
But Einstein said that was not possible as he showed nothing can travel faster than light, so you are setting impossible questions now.
RE: Puzzle a Day! - Veggie - 11-05-2023
Sorry to tell you all, but you've missed your flights.
RE: Puzzle a Day! - Veggie - 11-05-2023
This puzzle looks easier.
Rearrange the letters to make three 6-letter words that are all synonyms of GOOD.
EEEHHINNOORRSTTTWY
RE: Puzzle a Day! - Mark_Riga - 12-05-2023
Is one of the words entire?