They are lookin for how many seconds between x minutes past : PS Archive
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# They are lookin for how many seconds between x minutes past

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Eternal Intern
Joined: 07 Jun 2003
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They are lookin for how many seconds between x minutes past [#permalink]

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05 Aug 2003, 14:40
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They are lookin for how many seconds between x minutes past 3 p.m. and y minutes past 4 p.m. of the same day?

0 < x< 60 0 < y < 60

Write an algebraic expression. I got a bad habit of just relying on picking numbers, etc. Would like Stolyar to give some pointers.

How can 60 ( x- y ) be right?
I don't believe it.

VT

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Ride em cowboy

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05 Aug 2003, 20:29
3600 -60(x-y)

difference between 3pm and 4 pm = 3600 sec
difference between x minutes past 3 pm and 4 pm = 3600-60x sec
difference between x minutes past 3 pm and y minutes past 4 pm = 3600-60x + 60y sec = 3600-60(x-y) sec.
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05 Aug 2003, 20:46
Maybe in the question, something else was being asked. For example, how many minutes more than an hour has passed?

Since if that is the question, then the answer should be 60(y-x), or -60(x-y).

But base on the quesiton you posted the answer should be
3600-60(x-y)
The complete question?   [#permalink] 05 Aug 2003, 20:46
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