How do you determine which of the fractions $\frac{17}{20}$ $17/20$ or $\frac{21}{25}$ $21/25$ is greater and by how much?

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Answer 1 · 2018-05-14T14:39:11

$\frac{17}{20}$ $17/20$ is greater by $\frac{1}{100}$ $1/100$

Put them over the same denominator using equivalent fractions

$\frac{17}{20} = \frac{85}{100}$ $17/20=85/100$

$\frac{21}{25} = \frac{84}{100}$ $21/25=84/100$

Answer 2 · 2018-05-14T15:40:25

$\frac{17}{20}$ $17/20$ is bigger than $\frac{21}{25}$ $21/25$ by $\frac{1}{100}$ $1/100$

Subtract the fractions.
If you get a positive answer the first one is bigger, if you get a negative answer, the second one is bigger.

To subtract them you need the LCD which is $100$ $100$ in this case.

$\frac{17}{20} - \frac{21}{25}$ $17/20-21/25$

$= \frac{85 - 84}{100}$ $= (85-84)/100$

$= \frac{1}{100}$ $=1/100$

$:. 17/20$ is bigger than $21/25$ by $1/100$

How do you determine which of the fractions 17/20172017/20 or 21/25212521/25 is greater and by how much?