X=8 is the correct answer :)
The answer is 40. 5 x 8, height x base = area
The answer is: "2156" .
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(215)*10 + 6*(1) = 2150 + 6 = 2156 .
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All you have to do is divide
500 divided by 10 equals 50
so 50 cars went on the picnic trip