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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsExpertLevel 70
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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?

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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-BoxTarget

Frequently asked questions

What is the correct answer to this question?

(12)

Why is this the correct answer?

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

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Arithmetic Progressions (AP). Topic: Word problems based on APs.

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