please help with this word problem?

Question

Ed is recording a patient's total fluid intake for the day. If the patient drank 1 1/2 cups at 6 a.m., 3/4 cup at 11:00 a.m and 7/8 of a cup at 3:00p.m., what was the total fluid intake?

Answer 1

We need to add these fractions. First, we can convert 1 1/2 to an improper fraction:

 

1 1/2 = 3/2

 

So, we have 3/2 + 3/4 + 7/8

 

The common denominator is 8

 

3/2 = 12/8

 

3/4 = 6/8

 

Now, our problem becomes

 

12/8 + 6/8 + 7/8 = 25/8 = 3 1/8 cups of fluid intake