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The Happy Hamburger served 100 customers yesterday. 3/10 of the customers ordered breakfast. 2/5 of the remaining customers ordered drive through. The rest of the customer ordered desert. How many customers ordered desert?

 Apr 22, 2021
edited by Ajdabegano  Apr 22, 2021
 #1
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1/10=10

10/10-3/10=7/10=70

2/5 x 70 = 28

 

70-28=$\boxed{42}$

 Apr 22, 2021
 #2
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First let's find how many people ordered breakfast and how many people ordered drive through.

 

Breakfast = 3/10 * 100 = 30 people

Drive through = 2/5 * 70 (remaining people) = 28

 

 

Now we know that 28 + 30 people ordered either drive through or breakfast, or 58 people did.

 

Now we can subtract 58 from 100:

 

100 - 58 = 42

 

So, 42 people ordered desert.

 Apr 22, 2021

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