NTERMEDIATE ALGEBR 83. Collision Course Two cars that are traveling toward Defen
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NTERMEDIATE ALGEBR 83. Collision Course Two cars that are traveling toward Defend your average spee 90. Discount Pri of a clothing for $15 each regular pric the original profit of $6 you price th 91. Critical Thi would resu SULLIVAN STRUVE each other are 455 miles apart. One car is traveling 10 miles per hour faster than the other car. The cars pass after 3.5 hours. How fast is each car traveling? Table of Contents to 84. Collision Course Two planes that are traveling toward 1.3 Using Formulas to 1.3 Exercises each other are 720 miles apart. One plane is traveling 40 miles per hour faster than the other. The planes pass after 0.75 hour. How fast is each plane traveling? 85. Boats Two boats leave a port at the same time, one 1.4 Linear Inequalities in traveling north and the other traveling south. The northbound boat travels at 12 miles per hour (mph) faster than the southbound boat. If the southbound boat is traveling at 25 mph, how long will it be before they are 155 miles apart? Putting the Concepts- 92. Critical Th would resu 1.5 Rectangular Coordinates and Graphs of 93. Uniform 86. Cyclists Two cyclists leave a city at the same time, one 1.5 Exercises 1.6 Linear Equations in going east and the other going west. The westbound cyclist bikes at 3 mph faster than the eastbound cyclist. If after 6 hours they are 162 miles apart, how along the train that direction Two Variables 1.6 Exercises 1.7 Parallel and the train fast is each cyclist riding? 87. Walking At 10:00 A.M. two people leave their homes that are 15 miles apart and begin walking toward each other. If one person walks at a rate that is 2 mph faster than the other and thev meet after 1 5 hours Explaining t 94. Consider new blern Bookmarks yright 2018 Education, Inc. All I Privacy up ckExplanation / Answer
85) rate of northbound boat = 12+ 25= 37 mph
rate of southbound = 25 mph
distance = rate * time
155 = 25t + 37t
155 = 62t
t = 155/ 62
t = 2.5
so, they are 155 miles apart in 2.5 hours
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