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Subjects
Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsMedium
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In a training program practice lasts (25) minutes on the first day and increases by (5) minutes each next day. What is the total practice time in (14) days?

Answer and explanation

Correct answer: (805)

The practice times form the AP (25,30,35,\ldots) and (S_{14}=805). Exam tip: the same sum formula works when time increases regularly.

Related tags

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