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

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-ProblemReservoirTotalWord Problems Based On ApsArithmetic Progressions (Ap)Arithmetic Progressions ApMathematics
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