Question 1194493
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The ratio of speeds is 15:45 = 1:3, and the distances are the same, so the ratio of times spent at the two speeds is 3:1.<br>
3x = hours spent riding
x = hours spent driving<br>
3x+x=8
4x=8
x=2<br>
hours spent riding at 15mph = 3x = 6
hours spent driving at 45mph = x = 2<br>
distance riding (rate times time): 6(15) = 90
distance driving: 2(45) = 90<br>
ANSWER: 90 miles<br>