01-05-2017
Mathematics

contestada

6 pens and 4 pencils cost $1.08. 4 pens and 3 pencils cost 75 cents. Find the cost of 5 pens and 5 pencils
PLEASE HELP ASAP!!?

Respuesta :

Аноним Аноним

01-05-2017

Let x: pen, y: pencil

6x+4y=1.08

4x+3y=0.75

Or
12x+8y=2.16
-
12x+9y=2.25
=
-y=-0.09
y=$0.09
x=$0.12

5y=$0.45
5x=$0.60. As a result, 5 pens costs $0.6 and 5 pencils cost $0.45. Hope it help!

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