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The sum of the length and breadth of a rectangle is 37 cm. The length is 11 cm more than the breadth. What is the breadth?

Answer and explanation

Correct answer: 13 cm

Let the rectangle’s length be l cm and breadth be b cm. The two statements translate into the linear equations l + b = 37 and l − b = 11. This is a standard word problem solved by elimination. Subtract the second equation from the first: (l + b) − (l − b) = 37 − 11. The l terms cancel, leaving 2b = 26, so b = 13 cm. Then l = b + 11 = 24 cm. Substitution verifies both conditions: 24 + 13 = 37 and 24 − 13 = 11. Therefore option C is correct. If the breadth were 11, 12, or 14 cm, the corresponding sums would be 33, 35, or 39 cm, not 37 cm.

Related tags

Pair-Linear-EquationsRectangle-Word-ProblemElimination-MethodAlgebraic Methods: Substitution Method And Elimination Method.Algebraic Methods Substitution Method And Elimination MethodPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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