What is 3/8 of 60?
Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 3/8 of 60? We'll show you a straightforward method to achieve that.
How to calculate 3/8 of 60?
- Multiply the whole number by the numerator of the fraction: 60 × 3 = 180
- Divide this result by denominator of the fraction: 180/8 = 22.5
- Simplify by dividing both the numerator and denominator by their GCD (4):
- 180/4 = 45
- 8/4 = 2
- Which gives: 45/2
Since 45/2 is an improper fraction, the result could also be expressed as a mixed number: 22 1/2
How does it work?
The principle behind finding a fraction of a number, such as 3/8 of 60, is rooted in the method of cross-multiplication.
Consider the following proportion: (where x represents 3/8 of 60)
- Using the cross-multiplication method, multiply both numerators by their opposite denominators:
- Which gives:
- Divide both sides by 8 to isolate x:
- Which gives the result: (or )
Thus, 3/8 of 60 is equal to 45/2 (or 22.5 in its decimal form).