What is 2/1 of 72?
Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 2/1 of 72? We'll show you a straightforward method to achieve that.
How to calculate 2/1 of 72?
- Multiply the whole number by the numerator of the fraction: 72 × 2 = 144
- Divide this result by denominator of the fraction: 144/1 = 144
How does it work?
The principle behind finding a fraction of a number, such as 2/1 of 72, is rooted in the method of cross-multiplication.
Consider the following proportion: (where x represents 2/1 of 72)
- Using the cross-multiplication method, multiply both numerators by their opposite denominators:
- Which gives:
- Divide both sides by 1 to isolate x:
- Which gives the result:
Thus, 2/1 of 72 is equal to 144/1 (or 144 in its decimal form).