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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsMediumLevel 70
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A battery gains (7) percent charge in the first hour and (3) percent more charge each next hour. What is the total percentage charge gained in (8) hours?

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Answer and explanation

Correct answer: (140)

The charge increases are (7,10,13,\ldots) and (S_8=140). Exam tip: percentage increases can also be used as AP terms.

Related tags

ApWord-ProblemBattery

Frequently asked questions

What is the correct answer to this question?

(140)

Why is this the correct answer?

The charge increases are (7,10,13,\ldots) and (S_8=140). Exam tip: percentage increases can also be used as AP terms.

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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