Answer :

X. 34
_ = _
354 100
100x=12036
_ = _
X. =120.36 is the answer
The easiest way for me to to this is divide the number you're finding the percent of and divide it by 100. From there, you multiply it by the percent's number. By percent's number I mean the number without the percent sign. Like 34% percent number is 34.

354/100 = 3.54

3.54 x 34 = 120.36

120.36 is 34% of 354

Another way that my teacher taught me was

is %
----- = -----
of 100

To do this, you substitute your given values. "Is" is the number you're trying to find in this problem, or your "x". "Of" is 354. "%" is 34.

x 34
----- = -----
354 100

From this point, you cross multiply.

354 x 34 = 12,036
12,036/100 = 120.36

120.36 is 34% of 354

A third way is to just multiply 354 by the decimal version of the percent.

354 x 0.34 = 120.36

120.36 is 34% of 354

All of these ways will give you the same answer. You just have to find one that works well for you. For me personally, the first way works best.