Answer:
36.
Step-by-step explanation:
In the scale of the model, it says 1:36, which means that one tractor-trailer is the size of 36 models.
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<em><u>If you need more help or explanation, follow up in the comments. :P</u></em></h2>
He included another variable - time. He should have given both brands the same amount of time to work. The only variable should have been the brands. Parker has introduced another variable and therefore his results are invalid.
The correct answer is 138
I got 1.5 I used Siri and then calculated tried to see if items correct so I went on safari and found nothing so I this it would be either a or c
Goodluck