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27 January, 05:37

Tissues are sold in packs and boxes A pack holds 20 tissues and a box holds 120 tissues Sia buys P packs of tissues and B boxes of tissues She buys a total of T tissues Write down a formula for T in terms of P and B

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  1. 27 January, 08:13
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    T=120 (P+B)

    Step-by-step explanation:

    If a pack holds 120 tissues, then P packs will hold (P*120) tissues

    This implies,

    1 pack : 120 tissues

    P packs : 120P tissues

    Also, if a box holds 120 tissues, then B boxes will (B*120) tissues

    This implies,

    1 box : 120 tissues

    B boxes : 120B tissues

    Writing a formula in terms of T, where T is the total we obtain,

    T=120P + 120B

    Using the idea of factorization we obtain

    T=120 (P+B)
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