Answer:
Total number of milkshakes sold on Monday = 300
Number of milkshakes without whipped cream = 90
Step-by-step explanation:
Given:
Adrienne adds whipped cream to 210 milk shakes which is 70% of the total milk shakes sold.
To find the total milkshakes sold.
Solution:
Let the total number of milkshakes sold on Monday be = ![x](https://tex.z-dn.net/?f=x)
Percentage of milkshakes with whipped cream added to them = 70%
Number of milk shakes with added whipped cream can be given as:
⇒ ![70\% \textrm{ of the total number of milkshakes}](https://tex.z-dn.net/?f=70%5C%25%20%5Ctextrm%7B%20of%20the%20total%20number%20of%20milkshakes%7D)
⇒ ![70\% x](https://tex.z-dn.net/?f=70%5C%25%20x)
⇒
[Representing percent in fraction form]
⇒
[evaluating in decimals]
We know that the number of milkshakes with whipped cream added to them = 210.
So, we have:
![0.7x=210](https://tex.z-dn.net/?f=0.7x%3D210)
Solving for ![x](https://tex.z-dn.net/?f=x)
Dividing both sides by 0.7
![\frac{0.7x}{0.7}=\frac{210}{0.7}](https://tex.z-dn.net/?f=%5Cfrac%7B0.7x%7D%7B0.7%7D%3D%5Cfrac%7B210%7D%7B0.7%7D)
∴ ![x=300](https://tex.z-dn.net/?f=x%3D300)
Thus, total number of milkshakes sold on Monday = 300
Number of milkshakes without whipped cream =
= 90