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20 August, 10:48

Margo can purchase tile at a store for $0.79 per tile and rent a tile saw for $24. At another store she can barrow the tile saw for free if she buys tiles there for $1.19 per tile. How many tiles must she buy for the cost to be the same at both stores?

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  1. 20 August, 12:44
    0
    24 + 0.79t = 1.19t

    24 = 1.19t - 0.79t

    24 = 0.40t

    24/0.40 = t

    60 = t

    they will be equal at 60 tiles
  2. 20 August, 13:20
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    T=number of tiles bought

    cost at store 1 is 0.79t+24

    cost at store 2 is 1.19t

    when will be equal cost?

    0.79t+24=1.19t

    minus 0.79t from both sides

    24=0.4t

    divide both sides by 0.4

    60=t

    answer is 60 tiles
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