What is 1/6 of 45?

How to calculate 1/6 of 45?

1. Multiply the whole number by the numerator of the fraction: 45 × 1 = 45
2. Divide this result by denominator of the fraction: 45/6 = 7.5
3. Simplify by dividing both the numerator and denominator by their GCD (3):
   • 45/3 = 15
   • 6/3 = 2
4. Which gives: 15/2

Since 15/2 is an improper fraction, the result could also be expressed as a mixed number: 7 1/2

How does it work?

The principle behind finding a fraction of a number, such as 1/6 of 45, is rooted in the method of cross-multiplication.

Consider the following proportion: $\frac{1}{6}=\frac{x}{45}$ (where x represents 1/6 of 45)

1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: $1\times 45=6x$
2. Which gives: $45=6x$
3. Divide both sides by 6 to isolate x: $\frac{45}{6}=\frac{6x}{6}$
4. Which gives the result: $\frac{45}{6}=x$ (or $\frac{15}{2}=x$)

Thus, 1/6 of 45 is equal to 15/2 (or 7.5 in its decimal form).