to set up proportions to solve percent problems
paper and pencil
that percent originally meant "cent", or if you
prefer, "part(s) out of 100." If we keep this in
mind, it's a lot easier to set up a proportion. In fact we
always use the same label of
we set ours up.
take a look at a few:
is 30% of $35.
This means, how much out
of 35 would be equivalent to 30 parts out of 100?
The proportion will look
is what percent of 600?
This means, 38 out of 600
is equivalent to how many parts out of 100?
is 60% of what number?
This means, 60 parts out
of 100 parts is equivalent to 8 parts out of how many. Here
we are searching for the "whole" of which 8 is
the top "part."