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4 February, 02:45

At a concession stand, five hotdogs and two hamburgers cost $11.50; two hot dogs and five hamburgers cost $13.00. find the cost of one hot dog and the cost of one hamburger.

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  1. 4 February, 03:09
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    let x=cost of one hot dog

    let y=cost of one hamburger

    5x+4y=13

    4x+5y=14

    20x+16y=52

    20x+25y=70

    subtract

    -9y=-18

    y=2

    4x=14-5y=14-10=4

    4x=4

    x=1

    cost of one hot dog=$1.00

    cost of one hamburger=$2.00
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