What is 5/7 of 35?
Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 5/7 of 35? We'll show you a straightforward method to achieve that.
How to calculate 5/7 of 35?
- Multiply the whole number by the numerator of the fraction: 35 × 5 = 175
- Divide this result by denominator of the fraction: 175/7 = 25
- Simplify by dividing both the numerator and denominator by their GCD (7):
- 175/7 = 25
- 7/7 = 1
- Which gives: 25/1
How does it work?
The principle behind finding a fraction of a number, such as 5/7 of 35, is rooted in the method of cross-multiplication.
Consider the following proportion: (where x represents 5/7 of 35)
- Using the cross-multiplication method, multiply both numerators by their opposite denominators:
- Which gives:
- Divide both sides by 7 to isolate x:
- Which gives the result: (or )
Thus, 5/7 of 35 is equal to 25/1 (or 25 in its decimal form).