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5 January, 19:26

If z varies inversely as w, and z=7 when w=8, find z when w=14

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  1. 5 January, 20:17
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    Z varies inversely as w ⇒ z*w=k

    when z=7 and w=8 ⇒ 7*8=56=k

    when w=14 ⇒ z*14=56

    ⇒z=56/14

    ⇒ z=4
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