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If p > 6, what is the correct result after multiplying both sides by 3?

Answer and explanation

Correct answer: 3p > 18

The governing property is that multiplication by a positive number preserves the order in an inequality. Starting with p > 6, multiply both sides by 3: 3p > 3×6 = 18. Hence option A is correct. The direction remains greater than because 3 is positive. Option B incorrectly reverses the sign, which would happen only with multiplication by a negative number. Option C omits the multiplication from the left side, while option D changes both the operation and direction. A quick check with p = 7 confirms the result: 7 > 6 and 3×7 = 21 > 18. Thus every p greater than 6 produces a value 3p greater than 18.

Related tags

Linear InequalitiesPositive MultiplicationInequality PropertyIntroduction To InequalitiesMathematicsClass 11 Mcq

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