Jasmine is traveling at 45 miles per hour. At that same rate, how long will it take her to travel 135 miles?
\(45\ miles\ per\ 1\ hour\\ 135\ miles\ per\ x\ hours\\\\ making\ proportion:\\ 45-1\\ 135-x\\\\ cross\ multiplication\\\\ 45x=135\ \ \ | divide\ by\ 45\\\\ x=3\\\\ It\ will\ take\ 3\ hours.\)
Answer:
45\ miles\ per\ 1\ hour\\ 135\ miles\ per\ x\ hours\\\\ making\ proportion:\\ 45-1\\ 135-x\\\\ cross\ multiplication\\\\ 45x=135\ \ \ | divide\ by\ 45\\\\ x=3\\\\ It\ will\ take\ 3\ hours.
Step-by-step explanation: