The number of item C that you sold today is 18.
The equations that represents the information in the question is:
c = 0 .5d equation 1
c + d = 54 equation 2
In order to determine the value of c, take the following steps:
Divide both sides of equation 1 by 0.5 : 2c = d
Substitute for d in equation 2: 2c + c = 54
3c = 54
c = 18
Here is the complete question: item c is sold half as many times as item d. Altogether, you sold 54 of these menu items. How many of items C did you sell today?
To learn more about simultaneous equations, please check: https://brainly.com/question/25875552
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