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Answer: 19
Reasoning: the equation is 7 + (6 x 2) = 19
The probability would be 12/16 or 75%.
Hope this helps!
Simple, finding markdown, use these two formulas.
Markdown=Original-New
and
Percent Markdown= Markdown Amount/Original*100
So,
Markdown=612-450
M=162
Markdown%= 162/612*100
M%=0.2647*100
M%=26.5 (rounded)
Thus, there was a 26.5% decrease.