<PRE><B>Question 814372</B>
c = number of camels
t = number of ostriches
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2t + 2c = 60
2t + 4c = 86
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2t + 2c = 60
2t = 60 - 2c
t = 30 - c
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2t + 4c = 86
2(30 - c) + 4c = 86
60 - 2c + 4c = 86
2c = 26
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c = 13
t = 17
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