If Sandy’s cookie recipe calls for one-third cup of brown sugar and she increases it by two-ninths of a cup, how much brown sugar does she use?
(1 point)
Responses
seven-ninths cup
Image with alt text: seven-ninths cup
start fraction 5 over 9 end fraction cup
Image with alt text: start fraction 5 over 9 end fraction cup
start fraction 4 over 9 end fraction cup
Image with alt text: start fraction 4 over 9 end fraction cup
one-ninth cup
To calculate the amount of brown sugar Sandy uses, we first need to add one-third and two-ninths.
One-third can be written as 3/9, since 1/3 is equivalent to 3/9.
So, we have:
3/9 + 2/9 = 5/9.
Therefore, Sandy uses five-ninths (5/9) cup of brown sugar.
The correct answer is: start fraction 5 over 9 end fraction cup.
To find out how much brown sugar Sandy uses after increasing the recipe, we need to add one-third cup and two-ninths of a cup.
First, we need a common denominator for one-third and two-ninths. The least common multiple of 3 and 9 is 9. So, let's rewrite the fractions with a denominator of 9:
One-third cup is equivalent to 3 over 9 cup.
Two-ninths cup is already in the desired format.
Now, we can add the fractions:
3 over 9 cup + 2 over 9 cup = 5 over 9 cup
Therefore, Sandy uses 5 over 9 cup of brown sugar after increasing the recipe.