Patrick buys a season pass for each of his sons to visit the local amusement park as often as they want.  The passes were $100.00 each.  The oldest son went to the park 35 times over the summer and the youngest went 15 times.  What was the cost per trip to the park? Let's think step by step and output the final answer after "####".
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Patrick bought 2 tickets at $100.00 each for a total of 2*100 = $<<2*100=200.00>>200.00
The oldest son went 35 times and the youngest went 15 times for a total of 35+15 = <<35+15=50>>50 trips
The tickets cost $200.00 and together, the boys went to the park 50 times so each trip cost 200/50 = $<<200/50=4.00>>4.00
#### 4
Patrick buys a season pass for each of his sons to visit the local amusement park as often as they want.  The passes were $100.00 each.  The oldest son went to the park 35 times over the summer and the youngest went 15 times.  What was the cost per trip to the park?
train