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Three times a number \(x\) is less than 27. What is the correct solution?

Answer and explanation

Correct answer: \(x<9\)

‘Three times’ means \(3x\), so the inequality is \(3x<27\). Dividing both sides by the positive number 3 gives \(x<9\). Option C is incorrect because ‘less than’ does not include 9. Exam tip: the inequality sign reverses only when dividing or multiplying by a negative number.

Related tags

Linear InequalitiesOne Variable InequalitiesAlgebraic SolutionInequality SymbolsAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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