To find the viable solution from the table, we need to set up an equation based on the income generated from the entrance fees. The costs are $15 per adult and $8 per child, and the total income from entrance fees is $2,000.
We can represent the total income with the following equation:
\[ 15x + 8y = 2000 \]
where \( x \) is the number of adults and \( y \) is the number of children.
Now, we can substitute the pairs of values from the table into this equation to see which one satisfies it.
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For (47, 161.175): \[ 15(47) + 8(161.175) = 705 + 1289.4 = 1994.4 \] (not valid)
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For (80, 100): \[ 15(80) + 8(100) = 1200 + 800 = 2000 \] (valid)
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For (68.8, 121): \[ 15(68.8) + 8(121) = 1032 + 968 = 2000 \] (valid)
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For (0, 250): \[ 15(0) + 8(250) = 0 + 2000 = 2000 \] (valid)
Thus, the pairs that give a total income of $2,000 are (80, 100), (68.8, 121), and (0, 250).
Since the question asks for a viable solution, we see that multiple pairs are correct, but the first valid choice is (80, 100).
Final Answer: (80, 100)