Question

A person spent rupees 564 in buying pens and pencils if cost of own is 7 and each pencil is 3 and if the total no of things bought was 108 how many of each type did he buy?

Answer 1

let no of pens be x,
pencils be y

so total no of things bought 108
therefore x+y=108


cost a pen = 7 
cost of pencil= 3
total pendure = 564
so 7x+3y=564


therefor the solving the equation 
7x+3y=564
3x+3y=324 ( multiple 3 to x+y=108)
you get x = 60
so the no of pens bought are 60 and pencil bought are 48 

Answer 2

AnswerL=59 B =29•5

Step-by-step explanation: