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January 28, 2015

January 28, 2015

Posted by **Austin** on Monday, December 7, 2009 at 11:10pm.

- 5th grade (math) -
**drwls**, Tuesday, December 8, 2009 at 2:52am5G + 3D = 99

2G = D

5G + 6G = 11 G = 99

G = 9 (the number of goats)

D = 18 (the number of ducks)

I used algebra. Without using algebra, you'd have to try different numbers for G, double the number for D, and see what works.

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