Posted by Maria on Sunday, January 2, 2011 at 9:52pm.
I don't get page 50 of algebra with pizzazz!
Please help?
7) Kathy is 6 years younger than bill. 12 years ago bill was twice as old as Kathy was then. How old are they now?

Math  Reiny, Sunday, January 2, 2011 at 10:33pm
let Bill's present age be x
then Kathy's present age is x6
12 years ago:
Bill was x12
Kathy was x6  12 or x  18
at that time bill was twice as old as Kathy  x12 = 2(x18)
x12 = 2x  36
x = 24
x = 24
so now bill is 24 and Kathy is 18

Math  Maria, Monday, January 3, 2011 at 9:17pm
Alright thanks I get it now (:
I guess I was just multiplying wrong.
Answer This Question
Related Questions
 math  bill and ted combined age is 40. Eight years ago, bill was 2 years ...
 ALGEBRA  Jennie and Bill have a combined age of 50. 16 years ago Jennie was ...
 Math  2x represents that Clyde is twice (2 times) as old as Bonnie. 6 years ...
 Math  Kathy is y years old Find her age,if 1/2 of wat she was 3 years ago is ...
 algebra  A person is 3 times as old as aonther person but in 15 years she will ...
 Math  Help please. Jennie and Bill have a combined age of 50. 16 years ago ...
 Math  Jill and Bill are two members of the Hill family. Jill is 8 years old and...
 maths  Mr B is now twice as old as his younger brother. Eight years ago he was ...
 Prealgebra  Sara is 24 years younger than Joe. Six years ago she was half as ...
 math  A. Brad is 12 years older than Sam . If Brad were 8 years older than he ...
More Related Questions