Solve 20div(1-80%)

$$20 \div (1-80 \% )$$

Evaluate

$$100$$

Solution Steps

Reduce the fraction \frac{80}{100} to lowest terms by extracting and canceling out 20.

$$\frac{20}{1-\frac{4}{5}}$$

Convert 1 to fraction \frac{5}{5}.

$$\frac{20}{\frac{5}{5}-\frac{4}{5}}$$

Since \frac{5}{5} and \frac{4}{5} have the same denominator, subtract them by subtracting their numerators.

$$\frac{20}{\frac{5-4}{5}}$$

Subtract 4 from 5 to get 1.

$$\frac{20}{\frac{1}{5}}$$

Divide 20 by \frac{1}{5} by multiplying 20 by the reciprocal of \frac{1}{5}.

$$20\times 5$$

Multiply 20 and 5 to get 100.

$$100$$

Factor

$$2^{2}\times 5^{2}$$