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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsMedium
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A machine produces (100) units in the first hour and (5) fewer units each next hour. What is the total production in the first (10) hours?

Answer and explanation

Correct answer: (775)

The production is the decreasing AP (100,95,90,\ldots) and (S_{10}=775). Exam tip: for decreasing production rate, (d) is negative.

Related tags

ApWord-ProblemMachineWord Problems Based On ApsArithmetic Progressions (Ap)Arithmetic Progressions ApMathematicsClass 10 Mcq
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