Question

A notebook and a pen together cost $162.The cost of a pen is $.30 more than five times the cost of the notebook.Find the cost of the notebook and pen.

Answer 1

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Let the cost of the notebook is x
So cost of pen = 5x +30

ATQ
$x + 5x + 30 = 162 \\ 6x = 162 - 30 \\ 6x = 132 \\ x = \frac{132}{6} \\ x = 22 \\ so \: cost \: of \: notebook \: is \: 22 \\ and \: cost \: ofa \: pen \: = 5 \times 22 + 30 \\ = 140$
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