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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsExpert
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In a donation box (60) rupees are put on the first day and (20) rupees more each next day. How many days will be needed to collect (2040) rupees?

Answer and explanation

Correct answer: (12)

The amounts are (60,80,100,\ldots) and (S_n=2040) gives (n=12). Exam tip: put the target total in the sum formula.

Related tags

ApWord-ProblemDonation-BoxTargetWord Problems Based On ApsArithmetic Progressions (Ap)Arithmetic Progressions ApMathematics
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