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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsExpert
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In a library the first shelf has (24) books and there are (1240) books on (20) shelves. If each next shelf has an equal increase, what is the increase?

Answer and explanation

Correct answer: (4)

Using (S_{20}=1240) and (a=24) gives (d=4). Exam tip: find the common difference from the total and first term.

Related tags

ApWord-ProblemLibraryDifferenceWord Problems Based On ApsArithmetic Progressions (Ap)Arithmetic Progressions ApMathematics
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