Tricycles and scooters

Honza's kit included 19 wheels. He used them all to construct tricycles and scooters. How many complete scooters and tricycles did he build? He will find all the solutions.

Final Answer:

t₁ =  1
d₁ =  8
t₂ =  3
d₂ =  5
t₃ =  5
d₃ =  2

Step-by-step explanation:

$t_1=1$

$d_1=(19-3\cdot t_1)/2=(19-3\cdot 1)/2=8$

$t_2=3$

$d_2=(19-3\cdot t_2)/2=(19-3\cdot 3)/2=5$

$t_3=5$

$d_3=(19-3\cdot t_3)/2=(19-3\cdot 5)/2=2$

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