You must travel 295 miles to reach the next clue. In the first two hours of the trip you drive 115 miles. If you must reach the clue before time expires in 2.5 hours, at least how many miles should you travel each hour?​

Step-by-step explanation:

295 (miles to drive altogether) - 115 (miles already driven) = 180 (miles left to drive)

115 (miles already driven) / 2 (how many hours it took to reach 115 miles) = 57.5 (miles per hour)

180 (miles left to drive) / 57.5 (miles per hour) = 3.13 (hours it will take to reach the 295-mile mark at a rate of speed of 57.5 miles per hour)

So, you will have to drive more miles per hour than 57.5 miles per hour to be able reach the 295-mile goal, because it would take approximately 3 hours to drive the remaining 180 miles.

You will have to drive AT LEAST 72 miles each hour, and then 36 miles in the half hour to be able to reach the 295-mile mark.

I hope this helps, and is a thorough enough explanation :)