The distance travelled in 12 hours is 480 miles
If the distance that an automobile travel varies directly as the time it travels, this is expressed as:
s = kt
Given that s = 280 miles and t = 7hours
280 = 7k
k = 280/7
k = 40mi/hour
If the automobile travels in 12 hours;
s = 40 * 12
s = 480 miles
Hence the distance travelled in 12 hours is 480 miles
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