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Alice bought [tex]\frac{8}{9}[/tex] of a pound of grapes and ate [tex]\frac{1}{3}[/tex] of a pound. How many pounds were left?

A. [tex]\frac{8}{6}[/tex]
B. [tex]\frac{7}{3}[/tex]
C. [tex]\frac{7}{9}[/tex]
D. [tex]\frac{5}{9}[/tex]


Sagot :

To determine how many pounds of grapes were left after Alice ate some, we can follow these steps:

1. Understand the initial amount of grapes Alice bought:
Alice initially bought [tex]\(\frac{8}{9}\)[/tex] of a pound of grapes.

2. Determine the amount of grapes Alice ate:
Alice ate [tex]\(\frac{1}{3}\)[/tex] of a pound of grapes.

3. Convert the fraction of grapes Alice ate to have a common denominator with the initial amount:
Since the initial amount ([tex]\(\frac{8}{9}\)[/tex]) is expressed with a denominator of 9, and Alice ate [tex]\(\frac{1}{3}\)[/tex], we need to convert [tex]\(\frac{1}{3}\)[/tex] to an equivalent fraction with a denominator of 9:
[tex]\[ \frac{1}{3} = \frac{1 \times 3}{3 \times 3} = \frac{3}{9} \][/tex]

4. Subtract the amount of grapes Alice ate from the initial amount she bought:
Now we subtract [tex]\(\frac{3}{9}\)[/tex] (grapes she ate) from [tex]\(\frac{8}{9}\)[/tex] (initial amount):
[tex]\[ \frac{8}{9} - \frac{3}{9} = \frac{8 - 3}{9} = \frac{5}{9} \][/tex]

Therefore, the remaining pounds of grapes are [tex]\(\frac{5}{9}\)[/tex].

The correct answer is:
D. [tex]\(\frac{5}{9}\)[/tex]