What is 10/6 of 80?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 10/6 of 80? We'll show you a straightforward method to achieve that.

How to calculate 10/6 of 80?

  1. Multiply the whole number by the numerator of the fraction: 80 × 10 = 800
  2. Divide this result by denominator of the fraction: 800/6 = 133.33333333333
  3. Simplify by dividing both the numerator and denominator by their GCD (2):
    • 800/2 = 400
    • 6/2 = 3
  4. Which gives: 400/3

Since 400/3 is an improper fraction, the result could also be expressed as a mixed number: 133 1/3

How does it work?

The principle behind finding a fraction of a number, such as 10/6 of 80, is rooted in the method of cross-multiplication.

Consider the following proportion: 10 6 = x 80 (where x represents 10/6 of 80)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 10 × 80 = 6 x
  2. Which gives: 800 = 6 x
  3. Divide both sides by 6 to isolate x: 800 6 = 6 x 6
  4. Which gives the result: 800 6 = x (or 400 3 = x )

Thus, 10/6 of 80 is equal to 400/3 (or 133.33333333333 in its decimal form).