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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsExpertLevel 70
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A machine costs (1000) rupees on the first day and (45) rupees less each next day. What is the total cost in (12) days?

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Answer and explanation

Correct answer: (9030)

The costs form the decreasing AP (1000,955,910,\ldots) and (S_{12}=9030). Exam tip: take (d) negative for decreasing costs.

Related tags

ApWord-ProblemCostDecreasing

Frequently asked questions

What is the correct answer to this question?

(9030)

Why is this the correct answer?

The costs form the decreasing AP (1000,955,910,\ldots) and (S_{12}=9030). Exam tip: take (d) negative for decreasing costs.

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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