Question 1189192
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From where he lives, it costs Jared $4 more for a round­trip train ticket to Chaska 
han it does for one to Waconia. Last month, Jared took round­trips to Chaska 7 times 
and to Waconia 8 times. If he spent a total of $103 on train tickets, how much does 
Jared spend on one round­trip ticket to Waconia?
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<pre>
Let x be the price of one round trip to Waconia, in dollars (the unknown value under the problem's question).

Then the price for one round trip to Chaska is (x+4) dollars.


Next, write the "money equation" as you read the problem

    7(x+4) + 8x = 103.


Now, simplify and find x

    7x + 28 + 8x = 103

    7x + 8x = 103 - 28

      15x   =  75

        x   = 75/15 = 5.


<U>ANSWER</U>.  The ticket for the round trip to Waconia and back costs 5 dollars.
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Solved.