Difficulty: Easy
Correct Answer: 192
Explanation:
Introduction / Context:
The original expression can be ambiguous without parentheses. Interpreting it as (√324) / 1.5 = ? / √256 matches the provided numeric options. We solve for the unknown numerator.
Given Data / Assumptions:
Concept / Approach:
Evaluate both square roots, compute the left-hand side, then cross-multiply to find ?.
Step-by-Step Solution:
Verification / Alternative check:
Substitute back: 192 / 16 = 12, which equals 18 / 1.5. Consistent.
Why Other Options Are Wrong:
Common Pitfalls:
Misreading the original as √(324/1.5), which would introduce an irrational factor not present in the options.
Final Answer:
192
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