it is 8 percent of 50.
4/50=%/100 You now have a proportion. Cross multiply.
50%=400 Replace % with any variable.
50x=400 Now divide both sides of the equation by 50.
x=8
(% is basically the percentage of 4 of 50 over 100. its much easier to solve percentage problems when the percentages are over 100. 100 represents a full percentage.
example- 4 of 100 is 4% of 100)
the second is 11.34
If 81 is 100%, so we can write it down as 81=100%.
We know, that x is 14% of the output value, so we can write it down as x=14%.
Now we have two simple equations:
1) 81=100%
2) x=14%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
81/x=100%/14%
Now we just have to solve the simple equation, and we will get the solution we are looking for.
now we have:
14% of 81=11.34