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9 January, 02:43

Jones assembles 200 relays in the same time that Smith assembles 180. When Jones has completed 300 relays, how many will Smith have turned out?

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  1. 9 January, 05:10
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    270

    Step-by-step explanation:

    Jones turns out 200 relays to Smith's 180. You set up that basic ratio and make a proportion out of it.

    S/J = 180/200

    Now you make your proportion

    S/J = x/300

    But the 2 ratios much remain the same.

    180/200 = x / 300 Multiply both sides by 300

    180*300/200 = x Multiply the numerator together.

    54000/200 = x Do the division

    270 = x

    Smith will have turned out 270 relays.
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