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1. What is the least common denominator?

Jose made Tres Leche. His dad ate [tex]\frac{1}{8}[/tex] of the cake and his sisters ate [tex]\frac{2}{3}[/tex] of the cake. How much more did his sisters eat than his dad?

Ans. [tex]\qquad[/tex]


Sagot :

To solve the question of how much less Jose's sisters ate than his dad when considering fractional parts of the cake, we need to take the following steps:

1. Identify the fractions involved:
- Dad ate [tex]\(\frac{1}{8}\)[/tex] of the cake.
- Sisters ate [tex]\(\frac{2}{3}\)[/tex] of the cake.

2. Find a common denominator:
To compare these fractions, they must have a common denominator. The denominators are 8 and 3. The least common denominator (LCD) of these two numbers is found by looking for the least common multiple (LCM).
- The LCM of 8 and 3 is 24.
So, the least common denominator is 24.

3. Convert each fraction to the common denominator:
- Convert [tex]\(\frac{1}{8}\)[/tex] to a fraction with denominator 24:
[tex]\[ \frac{1}{8} = \frac{1 \times 3}{8 \times 3} = \frac{3}{24} \][/tex]
- Convert [tex]\(\frac{2}{3}\)[/tex] to a fraction with denominator 24:
[tex]\[ \frac{2}{3} = \frac{2 \times 8}{3 \times 8} = \frac{16}{24} \][/tex]

4. Calculate the difference:
Now that both fractions have the same denominator, we can find out how much less the dad ate compared to the sisters.
[tex]\[ \frac{16}{24} - \frac{3}{24} = \frac{16 - 3}{24} = \frac{13}{24} \][/tex]

5. Convert the fractional difference into a decimal, if needed:
- In decimal form, [tex]\(\frac{13}{24} = 0.5416666666666666\)[/tex].

Thus, Jose’s sisters ate approximately [tex]\(0.542\)[/tex] or exactly [tex]\(\frac{13}{24}\)[/tex] (which is 0.5416666666666666) more of the cake than his dad did.