What is 3/7 of 20?

How to calculate 3/7 of 20?

1. Multiply the whole number by the numerator of the fraction: 20 × 3 = 60
2. Divide this result by denominator of the fraction: 60/7 = 8.5714285714286

Since 60/7 is an improper fraction, the result could also be expressed as a mixed number: 8 4/7

How does it work?

The principle behind finding a fraction of a number, such as 3/7 of 20, is rooted in the method of cross-multiplication.

Consider the following proportion: $\frac{3}{7}=\frac{x}{20}$ (where x represents 3/7 of 20)

1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: $3\times 20=7x$
2. Which gives: $60=7x$
3. Divide both sides by 7 to isolate x: $\frac{60}{7}=\frac{7x}{7}$
4. Which gives the result: $\frac{60}{7}=x$

Thus, 3/7 of 20 is equal to 60/7 (or 8.5714285714286 in its decimal form).