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Estimation, Benchmarks, and Reasonableness
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ACT Prep
ACTM.031 Estimation, Benchmarks, and Reasonableness
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A computation (0.0248)(3,990) ÷ 0.502 is reported as 197. Which benchmark best checks it?
A
0.025 + 4,000 ÷ 0.5 is about 8,000, so 197 is too low.
B
0.025 × 400 ÷ 0.5 is about 20, so 197 is too high.
C
0.025 × 4,000 ÷ 0.5 is about 200, so 197 is reasonable.
D
0.25 × 4,000 ÷ 0.5 is about 2,000, so 197 is too low.
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