Mathematics

Question

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!!?

1 Answer

  • 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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