In chemistry, homework counts 20%, labs 30%, and the final exam 50%. Priya scored 95 on homework, 80 on labs, and 76 on the final. What is her weighted course grade, to one decimal place?

In English, quizzes count 15%, essays 35%, and the exam 50%. Luis scored 88 on quizzes, 92 on essays, and 78 on the exam. What is his weighted course grade, to one decimal place?

In biology, classwork counts 25%, lab reports 25%, and tests 50%. Jada scored 100 on classwork, 84 on lab reports, and 70 on tests. What is her weighted grade, to one decimal place?

In history, participation counts 10%, papers 40%, and the final project 50%. Omar scored 96 on participation, 85 on papers, and 90 on the project. What is his weighted grade, to one decimal place?

In Spanish, homework counts 30%, speaking counts 20%, and tests count 50%. Elena scored 94 on homework, 88 on speaking, and 76 on tests. What is her weighted grade, to one decimal place?

In art, sketches count 40%, portfolio 35%, and critique 25%. Theo scored 90 on sketches, 82 on portfolio, and 70 on critique. What is his weighted grade, to one decimal place?

In computer science, projects count 50%, quizzes 20%, and the final exam 30%. Nia scored 84 on projects, 75 on quizzes, and 90 on the final. What is her weighted grade, to one decimal place?

A market sold 40 kilograms of rice at $2.50 per kilogram, 25 kilograms at $3.40, and 35 kilograms at $4.00. What was the mean price per kilogram, to the nearest cent?

A roaster bought 12 kilograms of beans at $8.00 per kilogram, 18 kilograms at $7.50, and 30 kilograms at $6.90. What was the mean price per kilogram, to the nearest cent?

A cafe sold 20 liters of juice at $1.80 per liter, 35 liters at $2.20, and 45 liters at $2.60. What was the mean price per liter, to the nearest cent?

An orchard sold 50 kilograms of apples at $1.20 per kilogram, 30 kilograms at $1.60, and 20 kilograms at $2.10. What was the mean price per kilogram, to the nearest cent?

A bakery sold 80 muffins at $1.50 each, 40 muffins at $2.00 each, and 30 muffins at $2.50 each. What was the mean price per muffin, to the nearest cent?

A lab bought 10 liters of reagent at $12.00 per liter, 15 liters at $10.00, and 25 liters at $8.40. What was the mean price per liter, to the nearest cent?

A fabric shop sold 25 meters at $4.20 per meter, 35 meters at $3.80, and 40 meters at $3.50. What was the mean price per meter, to the nearest cent?

A seminar grade counts the project 60% and the presentation 40%. Anika scored 72 on the project. What presentation score gives her a weighted grade of exactly 80?

In a course, homework counts 25%, tests 50%, and the final exam 25%. Maya scored 90 on homework and 82 on tests. What final exam score gives her a weighted grade of exactly 85?

A store wants a mean price of $3.00 per kilogram for 100 kilograms of grain. It sold 20 kilograms at $2.50 and 30 kilograms at $3.10. What price is needed for the remaining 50 kilograms?

In photography, assignments count 35%, portfolio 45%, and the exam 20%. Cole scored 88 on assignments and 84 on the portfolio. What exam score gives a weighted grade of exactly 86?

A grocer wants a mean price of $5.20 per kilogram for 100 kilograms of nuts. There are 40 kilograms at $4.75 and 35 kilograms at $5.10. What price is needed for the last 25 kilograms?

In robotics, prototypes count 40%, notebook 25%, and competition 35%. Lina scored 91 on prototypes and 78 on the notebook. What competition score gives a weighted grade of 85, to the nearest whole number?