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22 August, 21:14

Jason's mom drove at 100km/hr for a 160km trip. how much longer would the trip have taken if she had driven at 90km/hr

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  1. 22 August, 21:37
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    We use the formule: t=S/v. So:

    + t1 = 160/100 = 8/5 hrs = 5760''

    + t2 = 160/90 = 16/9 hrs = 6400''

    => t2-t1 = 6400 - 5760 = 640'' = 10'40''
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