Adrienne had 20 cups of flour. She used 7 3/4 cups of flour for a batch of bread and 3 1/3 cups of flour for a batch of cookies.
How much flour did Adrienne have left after she
baked the bread and cookies?
I googled a completely different question than this and I got this?
Add the amount she used. Subtract the sum from 20.
just subtract what she used, from the 20 she started with.
11 and 1/12
To find out how much flour Adrienne had left after baking the bread and cookies, we need to subtract the amount of flour she used from the total amount she had initially.
First, let's convert the mixed numbers to improper fractions.
7 3/4 can be written as (7 * 4 + 3)/4 = 31/4
3 1/3 can be written as (3 * 3 + 1)/3 = 10/3
Next, let's add the fractions together.
31/4 + 10/3
To add fractions with different denominators, we need to find a common denominator.
The least common multiple of 4 and 3 is 12.
31/4 = (31 * 3)/(4 * 3) = 93/12
10/3 = (10 * 4)/(3 * 4) = 40/12
Now that we have the fractions with a common denominator, we can add them together.
93/12 + 40/12 = 133/12
So, Adrienne used a total of 133/12 cups of flour for the bread and cookies.
Now, let's subtract this amount from the initial 20 cups of flour.
To subtract fractions, we need to have a common denominator again.
20 = (20 * 12)/12 = 240/12
240/12 - 133/12 = (240 - 133)/12 = 107/12
Therefore, Adrienne had 107/12 cups of flour left after baking the bread and cookies.