What is 10/7 of 77?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 10/7 of 77? We'll show you a straightforward method to achieve that.

How to calculate 10/7 of 77?

  1. Multiply the whole number by the numerator of the fraction: 77 × 10 = 770
  2. Divide this result by denominator of the fraction: 770/7 = 110
  3. Simplify by dividing both the numerator and denominator by their GCD (7):
    • 770/7 = 110
    • 7/7 = 1
  4. Which gives: 110/1

How does it work?

The principle behind finding a fraction of a number, such as 10/7 of 77, is rooted in the method of cross-multiplication.

Consider the following proportion: 10 7 = x 77 (where x represents 10/7 of 77)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 10 × 77 = 7 x
  2. Which gives: 770 = 7 x
  3. Divide both sides by 7 to isolate x: 770 7 = 7 x 7
  4. Which gives the result: 770 7 = x (or 110 1 = x )

Thus, 10/7 of 77 is equal to 110/1 (or 110 in its decimal form).