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A shopkeeper saves (15) rupees more than the previous day. If he saved (50) rupees on the first day, what will be the savings sequence?

Answer and explanation

Correct answer: \((50,65,80,95,\ldots)\)

The saving on the first day is the first term, so \(a=50\). The saving increases by \(15\) rupees each day, so the common difference is \(d=15\). Thus the terms are \(50, 50+15=65, 65+15=80, 80+15=95\), giving \((50,65,80,95,\ldots)\). Option D has a difference of \(15\), but it starts with \(65\), not \(50\). Exam tip: In an AP, always check both the first term and the difference between consecutive terms.

Related tags

Arithmetic ProgressionCommon DifferenceSequenceWord ProblemClass 10 MathematicsIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)

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