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A factory makes (180) toys on the first day and (30) more toys each next day. How many toys are made on the (5)th day?

Answer and explanation

Correct answer: 300

The daily production increases uniformly by 30 toys, so it forms an arithmetic progression. Here, \(a=180\), \(d=30\), and \(n=5\). Therefore, \(a_5=a+(5-1)d=180+4\times30=300\). Option 270 adds the increase only three times, but four increases occur by the fifth day. Exam tip: use \(a+(n-1)d\) for the \(n\)th term.

Related tags

Arithmetic ProgressionAp Word ProblemsNth TermFactory ProductionClass 10 MathematicsWord Problems Based On ApsArithmetic Progressions (Ap)Arithmetic Progressions Ap

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