# SOLUTION: Lauren drove her car for 3 hours in a dust storm. When the skies cleared, she increased her speed by 30 miles per hour and drove for 4 more hours, completing her 295-mile trip. How

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 Click here to see ALL problems on Mixture Word Problems Question 407389: Lauren drove her car for 3 hours in a dust storm. When the skies cleared, she increased her speed by 30 miles per hour and drove for 4 more hours, completing her 295-mile trip. How fast did she travel during the dust storm?Answer by ankor@dixie-net.com(15652)   (Show Source): You can put this solution on YOUR website!Lauren drove her car for 3 hours in a dust storm. When the skies cleared, she increased her speed by 30 miles per hour and drove for 4 more hours, completing her 295-mile trip. How fast did she travel during the dust storm? : Let s = the slower speed then (s+30) = the faster speed : Write a distance equation, Dist = time * speed : Slow dist + fast dist = 295 mi 3s + 4(s+30) = 295 : 3s + 4s + 120 = 295 7s = 295 - 120 s = s = 25 mph is the dust storm speed : : Check the solution by finding the dist at each speed 3(25) + 4(55) = 75 + 220 = 295