Solve 30-(1div80%)

$$30-(1 \div 80 \% )$$

Evaluate

$$\frac{115}{4}=28.75$$

Solution Steps

Divide 1 by \frac{80}{100} by multiplying 1 by the reciprocal of \frac{80}{100}.

$$30-\frac{100}{80}$$

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

$$30-\frac{5}{4}$$

Convert 30 to fraction \frac{120}{4}.

$$\frac{120}{4}-\frac{5}{4}$$

Since \frac{120}{4} and \frac{5}{4} have the same denominator, subtract them by subtracting their numerators.

$$\frac{120-5}{4}$$

Subtract 5 from 120 to get 115.

$$\frac{115}{4}$$

Factor

$$\frac{5 \cdot 23}{2 ^ {2}} = 28\frac{3}{4} = 28.75$$