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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsMediumLevel 72
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In a piggy bank (30) rupees are put on the first day and (30) rupees more each next day. How many days will it take to collect (1980) rupees?

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Answer and explanation

Correct answer: (11)

The amounts are (30,60,90,\ldots) and (S_n=1980) gives (n=11). Exam tip: when a total target is given, find the number of terms.

Related tags

ApWord-ProblemPiggy-Bank

Frequently asked questions

What is the correct answer to this question?

(11)

Why is this the correct answer?

The amounts are (30,60,90,\ldots) and (S_n=1980) gives (n=11). Exam tip: when a total target is given, find the number of terms.

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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