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Subjects
Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsMedium
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In a shop (90) packets are sold on the first day and (6) fewer packets are sold each next day. How many packets are sold in (10) days?

Answer and explanation

Correct answer: (630)

The sales form the decreasing AP (90,84,78,\ldots) and (S_{10}=630). Exam tip: take (d) negative for decreasing sales.

Related tags

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