A person spent rupees564 in it an pen and pencil if cost of each pen is RS7 and each pencil rs3 and if the total no. Of things bought was 108 how many each of type did he buy
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⇒ Let the number of pens be x.
⇒ Then, number of pencils =108−x
⇒ Cost of pens =7x
⇒ Cost of pencils =3(108−x)
According to the question,
7x+3(108−x)=564
7x+324−3x=564
4x+324=564
4x=564−324
4x=240
∴ x=
4
240
=60
⇒ Number of pencils =108−60=48
∴ The number of pens bought are 60 and pencil bought are 48.
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