Ratios and Percent Proportion Word Problems

The percent proportion is..
$$\frac{is}{of}\ =\ \frac{\%}{100}$$  

We can tell if ratios are proportional by...

Which TWO serves earned the highest amount in tips?

Sarah earned $175 babysitting for her neighbors. If she saved 40% of her money, how much did she save?

Barbara keeps 15% of her paycheck each week to put in her savings account. If Barbara makes $300 a week, how much will she have saved after 6 weeks?

A student earned a grade of 80% on a math test that had 30 problems. How many problems on this test did the student answer incorrectly?

Dr. Hall files 320 insurance claims every month. If 5% of those claims are rejected, how many of the claims are accepted?

A comparison of two quantities using the word to, for every/each, or a colon :.

A comparison of boys to girls in the class is a ratio of ______.

A comparsion of boys to total students in the class is a ratio that compares _____.