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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsEasy
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A school bus travels (25) km on the first day and (5) km more each next day. How far will the bus travel on the (8)th day?

Answer and explanation

Correct answer: 60 km

The distances travelled each day form an AP with first term 25 km and common difference 5 km. The eighth term is \(a_8=a+(8-1)d=25+7\times5=60\) km. Therefore, the correct answer is 60 km. Choosing 55 km would count the increase for only 6 days. Exam tip: for the \(n\)th term, multiply the common difference by \(n-1\).

Related tags

Arithmetic ProgressionAp Word ProblemsNth TermCommon DifferenceClass 10 MathematicsWord Problems Based On ApsArithmetic Progressions (Ap)Arithmetic Progressions Ap
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