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22 September, 05:11

The roof at a tennis stadium opens 421 inches in 50 seconds how many inches does the roof open per second

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  1. 22 September, 05:15
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    Make a proportion

    50 sec/421 inches = 1 sec/?

    ? = 421/50

    ? = 8.42 inches

    8.42 inches per sec
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