SOLUTION: East street school opened 15 years after Brown school. Brown was opened in 1978 and has been opened twice as long as East st. school. What year will East street school celebrate

Therefore East Street School opened in 1993 because 1978 + 15 = 1993

Let's see if that's true:

2010 - 1978 = 32.  So in 2010 Brown School has been open 32 years to date.

2010 - 1993 = 17.  So in 2010 East Street School ha been open 17 years to date.  

Well, 32, which is twice 16, is pretty close to twice 17.  That's not exactly
true, but maybe Brown opened in the early part of 1978 and East Street opened
in November or December of 1993 and hasn't had its 17th birthday yet and is
still only 16 years old while Brown has already had its 32nd birthday since it
opened in the early part of 1978.  So that's possible. 

Hmm. The word "will" should be "did", because East street has already
celebrated its 15th anniversary, last year 2009 in November or December.

So that doesn't work. But then maybe your book was printed in 2009.  let's see.

Let's pretend it's a year ago today, say 2009

>>East street school opened 15 years after Brown school. Brown was opened in 1978.<<
Therefore East Street School opened in 1993 because 1978 + 15 = 1993

and has been opened twice as long as East st. school. 

Let's see if that would have been true last year:

2009 - 1978 = 31.  So in 2009 Brown School had been open 31 years.

2009 - 1993 = 16.  So in 2009 East Street School had been open 16 years.  

Well, 31, is not quite twice 16.  So that's not exactly true, but maybe Brown opened in the late part of 1978 in November or December of 1993 and hadn't had its 32nd birthday yet in 2009 when the book was written, and is still only 31 years old while East Street has already had its 16th birthday since it opened in the early part of 1993.  So that's possible.  But then we look at the
question. 


>>What year will East street school celebrate its 15th anniversary?<<


But even if the book was written in 2009, East Street would still have already
had its 15th birthday.  So assuming the problem was written in 2009 doesn't
work either, for it would have already celebrated its 15th birthday in 2008.

------------------

So then maybe your book was printed in 2008.  let's see.

So let's pretend it's 2 years ago today, say 2008.

>>East street school opened 15 years after Brown school. Brown was opened in 1978.<<
Therefore East Street School opened in 1993 because 1978 + 15 = 1993

and has been opened twice as long as East st. school. 

Let's see if that would have been true 2 years ago:

2008 - 1978 = 30.  So in 2008 Brown School had been open 30 years.

2008 - 1993 = 15.  So in 2008 East Street School had been open 15 years.  

Yes, indeed!  That works just fine.


>>What year will East street school celebrate its 15th anniversary?<<


The answer in 2008 would have been 2008.  

The question should have been:

"When was this problem written?"  And the answer would have been 2008.

:-)  LOL!

Edwin