Writing Percent Proportions

In the Central City Grand Prix, out of 30 cars that started the race, 12 of them finished. What percent of the cars finished the race?

Which equation would you use to solve this:
Shirley spelled 12 of her 15 spelling words correctly on the test.  What percent grade did Shirley get on the test?

• x = 12% ● 15
• x = 15% ● 12
• 12 = x ● 15
• 15 = x ● 12

Determine if you are finding the part, percent, or whole.  
12 is 50% of what number?

• Part
• Percent
• Whole

The percent equation is ________

• whole = part x percent

• part = percent x whole

• part = percent / whole

A music collector has 1200 CDs, and 65% of them were produced after 1990. How many of the CDS were produced after 1990?

King Hangry is eating a 50 gram chocolate bar which contains 30% cocoa. How many grams of cocoa are in the chocolate bar?

5 student in class want to have extra homework. If 20% of the student want extra homework, how many total students are in the class?

Your friend paid $17 for a shirt. This amount was 85% of the total amount your friend spent while shopping. How much money did your friend spend?

4. There are 60 girls and 90 boys in the sixth grade at a middle school. Of these students, 3 girls and 9 boys write left-handed. What percentage of the sixth graders at this middle school write left-handed?

Bill is in a class of 15 boys and 35 girls. 40% of the students in the class take the bus to school. How many students do not take the bus to school?