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Bug 662041 - Weights of Trucks
Weights of Trucks
Status: RESOLVED FIXED
Product: gbrainy
Classification: Other
Component: gbrainy application
git master
Other Linux
: Normal normal
: ---
Assigned To: gbrainy-maint
gbrainy-maint
Depends on:
Blocks:
 
 
Reported: 2011-10-17 21:13 UTC by Jordi Mas
Modified: 2011-10-17 21:43 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Jordi Mas 2011-10-17 21:13:58 UTC 
Error from: derek.ricke@gmail.com

Received the following question today:

> You have two trucks that have a total weight of 330 units. If the lighter truck weights (sp) 15 >units less than half of the weight of the heavier truck, what is the weight of the lighter truck? >Answer A, B, C, or D.
>
> Choose one of the following: A) 90 B) 96 C) 84 D) 110
>
> Incorrect Answer. The answer is A. The heavier truck weights (sp) 210 and the lighter 90.
So... as I do the math, L + H = 330 and L + 15 = H/2 which through
some lovely algebra works out to 2L + 30 = H and H = 330 - L, then
another step to 2L + 30 = 330 - L; which reduces nicely to 3L = 300 or
L = 100.

As a quick double check, 210 + 90 = 300. 300 does not equal 330.
Comment 1 Jordi Mas 2011-10-17 21:43:14 UTC 
That has been fixed in HEAD:

http://git.gnome.org/browse/gbrainy/commit/?id=b004035ef8676f2833851db767132f6c246503c5

Thanks,

Jordi,