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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsHardLevel 71
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A shop sells (180) packets on the first day and (12) fewer packets each next day. How many packets are sold in (11) days?

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Answer and explanation

Correct answer: (1320)

The sales form the decreasing AP (180,168,156,\ldots) and (S_{11}=1320). Exam tip: keep (d) negative for decreasing sales.

Related tags

ApWord-ProblemSalesDecrease

Frequently asked questions

What is the correct answer to this question?

(1320)

Why is this the correct answer?

The sales form the decreasing AP (180,168,156,\ldots) and (S_{11}=1320). Exam tip: keep (d) negative for decreasing sales.

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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