Two cars are driving towards each other from towns that are 150 miles apart. The first car is traveling 45 miles per hour, and the second is traveling 55 miles per hour. If each leaves at 2:15, when will the two cars pass on the road? 

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To solve, refer to the figure.

Let d1 be the distance traveled by the first car and d2 be the distance traveled by the second car.

Since the two cars are 150 miles apart at the start, when they meet, the sum of their distances traveled is 150 miles.

`d_1+d_2=150`

Then, express the equation in terms of time. Let t be the number of hours that the cars been...

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