jeanine used 2 1/2 cups of flour to make muffins and 1 3/4 cups of flour to make biscuits. after bortowing 1/4 cup of flour, she had 2 1/4 cups left to make bread. how much flour did she have to begin with?
2 1/2 + 1 3/4 + 2 1/4 - 1/4 = ?
To find out how much flour Jeanine had to begin with, we need to add up the quantities of flour she used and the flour she had left.
First, let's calculate the total flour used. Jeanine used 2 1/2 cups of flour for muffins and 1 3/4 cups of flour for biscuits. We add these two amounts together:
2 1/2 cups + 1 3/4 cups = 5/2 cups + 7/4 cups
To add the fractions, we need to find a common denominator, which in this case is 4.
5/2 cups + 7/4 cups = 10/4 cups + 7/4 cups
= (10 + 7)/4 cups
= 17/4 cups
So, Jeanine used a total of 17/4 cups of flour for muffins and biscuits.
Next, let's calculate the flour she had left. After borrowing 1/4 cup of flour, she had 2 1/4 cups of flour remaining.
So, the flour she had left after borrowing is 2 1/4 cups.
Finally, to find out how much flour Jeanine had to begin with, we need to add the flour used to the flour she had left:
Flour used + Flour left = Total flour
17/4 cups + 2 1/4 cups = 17/4 cups + 9/4 cups
Again, we find a common denominator:
17/4 cups + 9/4 cups = (17 + 9)/4 cups
= 26/4 cups
= 6 1/2 cups
Therefore, Jeanine had 6 1/2 cups of flour to begin with.