[gbrainy] Fixes age answer

[Jordi Mas <jmas src gnome org>]

commit f1b9633e6dc1b02d49340cd6e19eb1dd6f669081
Author: Jordi Mas <jmas softcatala org>
Date:   Sat Aug 14 21:55:55 2010 +0200

    Fixes age answer

 data/games.xml |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/data/games.xml b/data/games.xml
index 0ecc3b7..aef623b 100644
--- a/data/games.xml
+++ b/data/games.xml
@@ -50,7 +50,6 @@
 		<type>Logic</type>
 		<difficulty>All</difficulty>
 		<svg file = "father_son.svg" x = "0.2" y = "0.25" width = "0.6" height = "0.4"/>
-		<!--- http://mathforum.org/library/drmath/view/58577.html -->
 		<variant>
 			<variables>
 				int father = 46;
@@ -72,7 +71,7 @@
 			</variables>
 			<question>John's age is nowadays 2 times his son's age. [ago] year ago, John was [proportion] times older than his son. How old is John's son nowadays?</question>
 			<question plural ="[ago]">John's age is nowadays 2 times his son's age. [ago] years ago, John was [proportion] times older than his son. How old is John's son nowadays?</question>
-			<answer>40</answer>
+			<answer>24</answer>
 			<rationale>[ago] year ago, John's age minus [ago] was equal to [proportion] times his son's age minus [ago].</rationale>
 			<rationale plural ="[ago]">[ago] years ago, John's age minus [ago] was equal to [proportion] times his son's age minus [ago].</rationale>
 		</variant>