A person spent rupees 564 in buying pens and pencils if cost of each pen is rupees 7 and each pencil is rupees 3 and if the total number of

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A person spent rupees 564 in buying pens and pencils if cost of each pen is rupees 7 and each pencil is rupees 3 and if the total number of things bought was 108, how many of each type did he buy​

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1 month 2021-08-12T18:54:17+00:00 1 Answer 0 views 0

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  1. Charlotte
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    2021-08-12T18:56:03+00:00

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    Let , total number of pens he buys =  x 

    And as given : 

    Total number of things bought was 108 , So

    Total number of pencils he buys = 108 –  x 

    Also given : A person spent Rs.564 in buying pens and pencils if cost of each pen is Rs.7 and each pencil is Rs.3 , So

    7 x  + 3 ( 108 – x ) = 564 ,

    7 x  + 324  – 3 x  = 564 ,

    4 x  = 240 ,

    x = 60

    Therefore,

    Total number of pens he buys = 60 

    And

    Total number of pencils he buys = 108 – 60 = 48 ( Ans )

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