8.2 Word Problems

At a meeting there were 4 parents, 28 students, and 8 teachers.

What percent of people at the meeting were students?

(note: type only the number)

Tori’s mathematics test had 75 problems: 10 arithmetic, 30 algebra, and 35 geometry problems. Although she answered 70% of the arithmetic, 40% of the algebra, and 60% of the geometry problems correctly, she did not pass the test because she got less than 60% of the problems right.

How many more questions would she have needed to answer correctly to earn a 60% passing grade?

A mixture of 30 liters of paint is 25% red tint, 30% yellow tint, and 45% water. Five liters of yellow tint are added to the original mixture. What is the percent of yellow tint in the new mixture?

(note: type only the number)

When my car’s gas tank is 80% empty, it contains 3 gallons of gas. How many gallons of gas does it contain when it is 80% full?

Peter and Emily played Go Fish against each other many times last January. Emily won 65% of the time, and Peter won the other 7 games. (There were no ties.) How many games did Emily win?

The Fighting Tomatoes, a minor-league baseball team, won 30 of their first 50 games. How many of the remaining 40 games must the Tomatoes win so that they will have won exactly 70% of their games at the end of the season?

The table to the right gives the percent of students in each grade at West Parkville and East Parkville elementary schools. West Parkville has 100 students and East Parkville has 200 students. In the two schools combined, what percent of the students are in grade 6?

(note: type only the number)