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

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Solution

Dear Student
Let the number of pens be x.
number of pencils=108-x
cost of pens=7x
cost of pencils=3(108-x)
according to question
7x+3(108-x)=564

4x+324=564
4x=564-324
4x=240
x=240/4
x=60
Number of pens=60
Number of pencils=108-60=48

regards

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

Dear Student Let the number of pens be x. number of pencils=108-x cost of pens=7x cost of pencils=3(108-x) according to question 7x+3(108-x)=564 4x+324=564 4x=564-324 4x=240 x=240/4 x=60 Number of pens=60 Number of pencils=108-60=48 regards

Dear Student
Let the number of pens be x.
number of pencils=108-x
cost of pens=7x
cost of pencils=3(108-x)
according to question
7x+3(108-x)=564

4x+324=564
4x=564-324
4x=240
x=240/4
x=60
Number of pens=60
Number of pencils=108-60=48

regards