18 is what percent of 72?

3 Answers
Apr 1, 2016

#25%#

Explanation:

For calculating a number #x# as a percentage of another number #y#, one has to calculate #(x xx100)/y%#.

As such, #18# as a percentage of #72# will be #(18xx100)/72%=(1cancel(18)xx100)/(4cancel(72)#

= #100/4=(25cancel(100))/(1cancel(4))=25%#

Apr 30, 2017

For me, I usually change it to fraction in simplest form first.
#18-:72 = 0.25#

0.25 = 25%

Okay, I do admit it doesn't work most of the time.

May 11, 2017

A = #25%#

Explanation:

First, let's divide #72 / 18#

= #4#

Thus, we know that #18# goes into #72# #4# times, and that means that #18# is #1/4# of #72#. Now, we just have to convert #1/4# into a percent. The way we find the percentage is by converting this fraction into a decimal:

= #1/4#
= #0.25#

We can now find the percentage by simply looking at the decimal.
And thus, the answer is #25%#

All the best!