Clarified grouping of radicals and divisors: Compute (√324) / 1.5 = ? / √256 and find the value of ?.

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:

  • (√324)/1.5 = ? / √256.
  • √324 = 18; √256 = 16.

Concept / Approach:
Evaluate both square roots, compute the left-hand side, then cross-multiply to find ?.


Step-by-Step Solution:

Left-hand side: (√324)/1.5 = 18 / 1.5 = 12.Right-hand side: ? / 16.Set equal: 12 = ?/16 ⇒ ? = 12 * 16 = 192.

Verification / Alternative check:
Substitute back: 192 / 16 = 12, which equals 18 / 1.5. Consistent.


Why Other Options Are Wrong:

  • 432, 288, 122, 64 do not satisfy ? / 16 = 12.

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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