He saw 15 cars and 8 trucks so 15+8 = <<15+8=23>>23 vehicles

Those 23 vehicles have 4 wheels each so 23*4 = <<23*4=92>>92 wheels

Bicycles have 2 wheels each and he saw 3 bikes so 2*3 = <<2*3=6>>6 wheels

Tricycles have 3 wheels each and he saw 1 tricycle so 1*3 = <<1*3=3>>3 wheels

In total, Juan saw 92 + 6 + 3 = <<92+6+3=101>>101 wheels

# Answer

101
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
For homework, Juan's teacher asked everyone in the class, to write down the different types of transportation (cars, trucks, bicycles, skateboards etc) they saw on their way home that afternoon.  After school, Juan walked home and saw the following: 15 cars, 3 bicycles, 8 pickup trucks and 1 tricycle.  How many tires in total were there on the vehicles Juan saw?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
101
For homework, Juan's teacher asked everyone in the class, to write down the different types of transportation (cars, trucks, bicycles, skateboards etc) they saw on their way home that afternoon.  After school, Juan walked home and saw the following: 15 cars, 3 bicycles, 8 pickup trucks and 1 tricycle.  How many tires in total were there on the vehicles Juan saw?
train