rtlToronto : 8996


Organizations / Canada / rtlToronto / 8996	8995 \| 8997

Subject:	Re: See what you find when you go snooping around...
Newsgroups:	lugnet.org.ca.rtltoronto
Date:	Wed, 3 Sep 2003 19:50:09 GMT
Viewed:	571 times

In lugnet.org.ca.rtltoronto, David Koudys wrote: fer example, the last one i did-- Dan (always seems to be) twice as old as Mike Mike was 5 years younger than Ben Ben was 10 years younger than Dan Solve for Ben (as the clue) Ben = Dan - 10 Dan = Mike x 2 Mike = Ben - 5 So... Ben = Dan - 10 Well, what does Dan =?--substitute... Ben = (Mike x 2) - 10 Well, what does Mike =?--substitute Ben = ((Ben - 5) x 2) -10 Ben = (2Ben + 10) -10 Then I ferget my basic algebra... Grr!!! Looking at it, the answer was 20 but I have no idea how to get there for high school algebra was eons ago... Dave K

Message has 3 Replies:

		Re: See what you find when you go snooping around...
(...) Dan = 2xMike Ben = Mike + 5 Ben = Dan - 10 Substitute for Dan: (2xMike) - 10 = Ben = (Mike + 5) 2xMike - 10 = Mike + 5 Add 10 to each side: 2xMike = Mike + 15 Rewrite as: Mike + Mike = Mike + 15 Subtract a Mike from each side: Mike = 15 (...) (21 years ago, 3-Sep-03, to lugnet.org.ca.rtltoronto)

		Re: See what you find when you go snooping around...
(...) I think from here it goes: Ben = (2(Ben) - 10) -10 (dave had an addition sign...) Ben/2(Ben) = 20 1/2 Ben = 20 Ben = 40 .... ? (20 / 1/2) .... DOH! Jeff VW (...) (21 years ago, 3-Sep-03, to lugnet.org.ca.rtltoronto)

		Re: See what you find when you go snooping around...
(...) Ben = 2Ben + 10 - 10 Ben - 2Ben = 2Ben - 2Ben + 0 -Ben = 0 Something is wrong here....... (...) Ben = Dan - 10 (susbstitute for Dan) Ben = (Mike x 2) - 10 (substitute for Mike) Ben = 2(Ben - 5) - 10 (solve for ben) Ben = 2Ben - 10 - 10 Ben - (...) (21 years ago, 3-Sep-03, to lugnet.org.ca.rtltoronto)

Message is in Reply To:

		Re: See what you find when you go snooping around...
In lugnet.org.ca.rtltoronto, Chris Magno wrote: <snip> (...) rtlToronto's problem solving--get yer 'bot to do this! No problem Algebra's not a problem, it's hell. ;) But I always seem to work 'em out. So far, have gotten thru most of the building at (...) (21 years ago, 3-Sep-03, to lugnet.org.ca.rtltoronto)

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