We want to find what percent of 50 is 20 by using a model. We can split the model into intervals of 10. There are 10 such intervals in 50, so each of them represents 10%. Let's find what percent of 50 is 20!
We found that 20 is 40 % of 50.
Checking Our Answer
We can check our answer by solving the percent proportion. The percent proportion is a proportion that sets the ratio of a part of a whole equal to the ratio of a percent out of 100. We can represent a is p percent of wwith the given proportion.
part/whole=percent/100 ⇔ a/w=p/100
We can find what percent 20 of 50 is by thinking about 20 as the part of a whole and 45 as the whole. Let's substitute a= 20 and w= 50 into the formula and solve for p using the Properties of Equality.
