Digital SAT Math Practice Question #2437
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Desmos / Fast Proportion: Set up equivalent fractions $\frac{a}{b} = \frac{c}{d}$ and cross-multiply in seconds.
Total parts $= 7 + 3 = 10$. Copper is $7/10$ of the total weight: $\frac{7}{10} \times 150 = 105$ grams....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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