Question

how to find percentage

Answer 1

the given number divided by 100
...
for example the total number is 50
so take like this ..
$\frac{50}{100} = \frac{1}{2}$
and the answer is 0.5

...
I think u got it

Answer 2

by 25 % of 200 is____


In this problem, of = 200, is = ?, and % = 25


We get:


is/200 = 25/100


Since is in an unknown, you can replace it by y to make the problem more familiar


y/200 = 25/100


Cross multiply to get y × 100 = 200 × 25


y × 100 = 5000


Divide 5000 by 100 to get y


Since 5000/100 = 50, y = 50


So, 25 % of 200 is 50


Examples #2:


What number is 2% of 50 ?


This is just another way of saying 2% of 50 is___


So, set up the proportion as example #1:


is/50 = 2/100


Replace is by y and cross multiply to get:


y × 100 = 50 × 2


y × 100 = 100


Since 1 × 100 = 100, y = 1


Therefore, 1 is 2 % of 50


Examples #3:


24% of___ is 36


This time, notice that is = 36, but of is missing


After you set up the formula, you get:


36/of = 24/100


Replace of by y and cross multiply to get:


36/y = 24/100


y × 24 = 36 × 100


y × 24 = 3600


Divide 3600 by 24 to get y


3600/24 = 150, y = 150


Therefore, 24 % of 150 is 36


Now, we will take examples to illustrate how to use the formula for percentage on the right


Examples #4:


To use the other formula that says part and whole, just remember the following:


The number after of is always the whole


The number after is is always the part


If I say 25 % of___ is 60, we know that the whole is missing and part = 60


Your proportion will will like this:


60/whole = 25/100


After cross multiplying, we get:


whole × 25 = 60 × 100


whole × 25 = 6000


Divide 6000 by 25 to get whole


6000/25 = 240, so whole = 240


Therefore, 25 % of 240 is 60


Examples #5:


___% of 45 is 9


Here whole = 45 and part = 9, but % is missing


We get:


9/45 = %/100


Replacing % by x and cross multiplying gives:


9 × 100 = 45 × x


900 = 45 × x


Divide 900 by 45 to get x


900/45 = 20, so x = 20