arivalen
18.04.2020 •
Mathematics
Which percentage of weight was lost if a patient weighed 190 lbs. and is currently 180 lbs?
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Ответ:
Using algebra, we can say that the first number is x, and the second number is y.
x+y=90
x-y=12
Adding these two equations gives us:
2x=102
x=51
Plugging this into the first equation,
51+y=90
y=39.
So, the two numbers are 51 and 39.