Question 1154830
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The distances are the same, and the ratio of speeds is 100:165 = 20:33.<br>
That means the times are in the ratio 33:20.<br>
Since the total time for the two trips is 30 minutes, the amount of time for the slower trip is<br>
{{{(33/(33+20))*30}}} = 18.68 minutes, to 2 decimal places.<br>