The train to clarksville
Mr. Moody grumbles about bad time-keeping trains from morning till night!.
On one particular morning he was quiet justified.
His train left on time for the one hour journey, to Clarksville, and it arrived 5 minutes late.
However, Mr. Moody 's watch showed it to be 3 minutes early, so he adjusted his watch by putting it forward 3 minutes.
His watch kept time during the day, and on the return journey in the evening the train started on time, according to his watch, and arrived on time, according to the station clock.
If the train travelled 25 percent faster on the return journey than it did on the morning journey, was the station clock fast or slow, and by how much?
as always by world pride
On one particular morning he was quiet justified.
His train left on time for the one hour journey, to Clarksville, and it arrived 5 minutes late.
However, Mr. Moody 's watch showed it to be 3 minutes early, so he adjusted his watch by putting it forward 3 minutes.
His watch kept time during the day, and on the return journey in the evening the train started on time, according to his watch, and arrived on time, according to the station clock.
If the train travelled 25 percent faster on the return journey than it did on the morning journey, was the station clock fast or slow, and by how much?
as always by world pride
Labels: bcreative, mathemagic, SharedPuzzle, thinktank
posted by Mr Fahrenheit at
4:43 PM
10 Comments:
i think it's fast by ten minutes
I say slow by 15 minutes, but what do I know.
i would say slow by 20 minutes. if you gleaned from the first part of the equation that his watch was 8 minutes slow which he corrected to 5 minutes slow by moving up his watch by 3 minutes and you figure that the train got to the return destination 15 minutes ahead of schedule because the equation said it traveled 25 percent faster making that 1/4 of an hour, add 5 plus 15 and that's 20 minutes slow in my book.
sry make that ten minutes slow, should have subtracted 5 instead of adding 5
getting close people. anonymous is close but not right.
Let's make it 17 minutes slow
The station clock is 3 minutes fast.
The morning journey took 65 minutes, and the evening journey therefore took 52 minutes, and the train arrived 57 minutes after it should have left, that is, 3 minutes early.
if the train went 25% faster it would arrive in 48 min. which is 12min. faster, and the train left 5 min. early, since the watch was 5 min. slow but said the train left on time, he should have arrived 17 min. early but the clock said he arrived on time making it 17 min. fast
I haven't read what anyone else as wrote.
The answer to this riddle is that the clocks weren't slow or fast. he didn't arrive ahead of schedule or behind.
If the train is going across states, then he's crossing time zones. For instance, if you go from New York to North Dakota on a train, you're going to be an hour behind. If you go from NY to Ohio, then your about 5 minutes behind.
time zones always change in one hour increments not 5 minutes
Post a Comment
Links to this post:
Create a Link
<< Home