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14 February, 13:24

Carol Ann buys a TV at 70% off the original price. If she pays $120, what was the original price of the TV?

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  1. 14 February, 13:47
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    Original price x (100-70) / 100 = $120

    therefore; original price = 120 * 100/30 = $400
  2. 14 February, 13:47
    0
    If the TV is 70% off, then that means she paid 30% of the original cost. If 30% of the original cost is $120, then ...

    30% * x = 120

    .30x = 120

    x = 120/.30

    x = 400

    The original cost was $400
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