Solve [(3,90-3,20):3,20]*100=

$$[ ( 3,90 - 3,20 ) : 3,20 ] \times 100 =$$

Evaluate

$$21,875$$

Solution Steps

Subtract 3,2 from 3,9 to get 0,7.

$$\frac{0,7}{3,2}\times 100$$

Expand \frac{0,7}{3,2} by multiplying both numerator and the denominator by 10.

$$\frac{7}{32}\times 100$$

Express \frac{7}{32}\times 100 as a single fraction.

$$\frac{7\times 100}{32}$$

Multiply 7 and 100 to get 700.

$$\frac{700}{32}$$

Reduce the fraction \frac{700}{32} to lowest terms by extracting and canceling out 4.

$$\frac{175}{8}$$

Factor

$$\frac{7 \cdot 5 ^ {2}}{2 ^ {3}} = 21\frac{7}{8} = 21.875$$