What is 2/4 of 65?
Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 2/4 of 65? We'll show you a straightforward method to achieve that.
How to calculate 2/4 of 65?
- Multiply the whole number by the numerator of the fraction: 65 × 2 = 130
- Divide this result by denominator of the fraction: 130/4 = 32.5
- Simplify by dividing both the numerator and denominator by their GCD (2):
- 130/2 = 65
- 4/2 = 2
- Which gives: 65/2
Since 65/2 is an improper fraction, the result could also be expressed as a mixed number: 32 1/2
How does it work?
The principle behind finding a fraction of a number, such as 2/4 of 65, is rooted in the method of cross-multiplication.
Consider the following proportion: (where x represents 2/4 of 65)
- Using the cross-multiplication method, multiply both numerators by their opposite denominators:
- Which gives:
- Divide both sides by 4 to isolate x:
- Which gives the result: (or )
Thus, 2/4 of 65 is equal to 65/2 (or 32.5 in its decimal form).