Solve 79.90-25%

$$79.90-25 \%$$

Evaluate

$$79.65$$

Solution Steps

Reduce the fraction \frac{25}{100} to lowest terms by extracting and canceling out 25.

$$79.9-\frac{1}{4}$$

Convert decimal number 79.9 to fraction \frac{799}{10}.

$$\frac{799}{10}-\frac{1}{4}$$

Least common multiple of 10 and 4 is 20. Convert \frac{799}{10} and \frac{1}{4} to fractions with denominator 20.

$$\frac{1598}{20}-\frac{5}{20}$$

Since \frac{1598}{20} and \frac{5}{20} have the same denominator, subtract them by subtracting their numerators.

$$\frac{1598-5}{20}$$

Subtract 5 from 1598 to get 1593.

$$\frac{1593}{20}$$

Factor

$$\frac{59 \cdot 3 ^ {3}}{5 \cdot 2 ^ {2}} = 79\frac{13}{20} = 79.65$$