Question 1111986
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The speed returning was 2 times the speed going; that means the time required for the return trip was half the time required for the trip there.<br>
Since they drove for a total of 6 hours, they spent 4 hours going and 2 hours returning.<br>
Multiply the speed times the time for either the trip there or the return trip to find the distance between their home and the Grand Canyon:
35*4 = 140
70*2 = 140<br>
Their home is 140 miles from the Grand Canyon.