Solve 20*8.5div28.5*15div20

$$20 \times 8.5 \div 28.5 \times 15 \div 20$$

Evaluate

$$\frac{85}{19}\approx 4.473684211$$

Solution Steps

Multiply 20 and 8.5 to get 170.

$$\frac{\frac{170}{28.5}\times 15}{20}$$

Expand \frac{170}{28.5} by multiplying both numerator and the denominator by 10.

$$\frac{\frac{1700}{285}\times 15}{20}$$

Reduce the fraction \frac{1700}{285} to lowest terms by extracting and canceling out 5.

$$\frac{\frac{340}{57}\times 15}{20}$$

Express \frac{340}{57}\times 15 as a single fraction.

$$\frac{\frac{340\times 15}{57}}{20}$$

Multiply 340 and 15 to get 5100.

$$\frac{\frac{5100}{57}}{20}$$

Reduce the fraction \frac{5100}{57} to lowest terms by extracting and canceling out 3.

$$\frac{\frac{1700}{19}}{20}$$

Express \frac{\frac{1700}{19}}{20} as a single fraction.

$$\frac{1700}{19\times 20}$$

Multiply 19 and 20 to get 380.

$$\frac{1700}{380}$$

Reduce the fraction \frac{1700}{380} to lowest terms by extracting and canceling out 20.

$$\frac{85}{19}$$

Factor

$$\frac{5 \cdot 17}{19} = 4\frac{9}{19} = 4.473684210526316$$