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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsHard
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A shop sells (200) packets on the first day and (10) fewer packets each next day. How many packets are sold in (15) days?

Answer and explanation

Correct answer: (1950)

The sales form the decreasing AP (200,190,180,\ldots), and (S_{15}=1950). Exam tip: keep (d) negative for decreasing sales.

Related tags

ApWord-ProblemSales-DecreaseWord Problems Based On ApsArithmetic Progressions (Ap)Arithmetic Progressions ApMathematicsClass 10 Mcq
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