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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsExpertLevel 72
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A reservoir has (2400) litres of water on the first day and (90) litres less each next day. What is the total observed water amount over the first (16) days?

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Answer and explanation

Correct answer: (27600)

The amounts form the decreasing AP (2400,2310,2220,\ldots) and (S_{16}=27600). Exam tip: the common difference is negative in a decreasing quantity.

Related tags

ApWord-ProblemReservoirTotal

Frequently asked questions

What is the correct answer to this question?

(27600)

Why is this the correct answer?

The amounts form the decreasing AP (2400,2310,2220,\ldots) and (S_{16}=27600). Exam tip: the common difference is negative in a decreasing quantity.

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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