Adrienne operates the milkshake machine at burgers and shakes. on monday she added whipped cream to 210 shakes. this was 70% of the total milkshakes sold. how many milkshakes were sold at burgers and shakes on monday? how many shakes did not have whipped cream?

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 =

Percentage of milkshakes with whipped cream added to them = 70%

Number of milk shakes with added whipped cream can be given as:

⇒

⇒

⇒  [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:

Solving for

Dividing both sides by  0.7

∴

Thus, total number of milkshakes sold on Monday = 300

Number of milkshakes without whipped cream = = 90