A person spent ₹564 in buying pens and pencils. If cost of pen is ₹7 and pencil is ₹3 and if total number of things bought was 108 then how many of each type did he buy?
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Step-by-step explanation:
Let the number of pens be x.
number of pencils=108-x
cost of pens=7x
cost of pencils=3(108-x)
7x+3(108-x)=564
7x+324-3x=564
4x+324=564
4x=564-324
4x=240x=240/4
x=60
Number of pens=60
Number of pencils=108-60=48
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