Ask a New Question

Question

In Professor Tuffguy's mathematics class, 36 students took the final exam. If the average passing grade was 78, the average failing grade was 60, and the class average was 71, how many of these 36 student passed the final?
10 years ago

Answers

Steve
If x passed, then the rest (36-x) failed. So, adding up all the grades, we have

78x + 60(36-x) = 71*36

This is just a mixture problem in other guise.
10 years ago

Related Questions

Which of the following mathematical patterns is evident in the piece below? An image shows a gild... Which of the following mathematical patterns is evident in the piece below? A picture shows two b... Which of the following mathematical patterns is evident in the drawing below? An image shows a dr... Which of the following mathematical patterns is evident in the Taj Mahal as shown below? An image... Hiro is a professor of mathematics at a university. he goes by the title "doctor" what does this ind... Which of the following mathematical expressions is equivalent to cos60° ?(1 point) Responses cosπ6 c... Hiro is a professor of mathematics at a university. He goes by the title “Doctor.” What does this in... Hiro is a professor of mathematics at a university. He goes by the title “Doctor.” What does this in...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use