Question 1197006
<br>
3 hours at the first speed and a total of 6 hours means 3 hours at the second speed.<br>
x = first speed
x-4 = second speed
3(x) = distance covered at first speed
3(x-4) = distance covered at second speed<br>
The total distance was 60 miles:<br>
3(x)+3(x-4) = 60
3x+3x-12 = 60
6x-12 = 60
6x = 72
x = 12<br>
ANSWER: Distance covered at first speed = 3x = 3(12) = 36 miles<br>