A person spent 564 ruppes in buying pens and pencil if cost of each pen is 7 ruppes and each pencil is 3 ruppes and if the total number of things brought was 108,how many of each type did he buy?
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Step-by-step explanation:
Let the no. of pen be x and no. of pencils be (108-x).
Price of total no. of pens= 7x
Price of total no. of pencils=3(108-x)
=324-3x
According to the question:
7x + (324-3x) = 564
(7x-3x) + 324 = 564
4x = 564 - 324
4x = 240
x = 240/4
x = 60
So,the no. of pens = 60
No. of pencils = 108-x
= 108-60
= 48
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