Question

A PERSON SPENT $564IN BUYING PENS AND PENCIL IF COST OF EACH PENS IS $7 AND EACH PENCIL $3 AND IF THE TOTAI NUMBER OF THINGS BOUGHT WAS 108 HOW MANY OF EACH TYPE DID HE BUY​

Answer 1

Answer:

Total amount spent = $564

let pens be x and pencils be y

x=$7               y=$3

x+y=108------>1

7x+3y = $564------->2

Multiply (1) by 7

7x + 7y = 756.....910

7x + 3y = 564

 

Subtract (2) from (1)

....4y = 192

....y = 48

Substitute y = 48

into Equation (1)

x + y = 108

x + 48 = 108

x = 108 = 48

x = 60.

Therefore:

48 pencils were bought

60 pens were bought.

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