Posted by **Annabella Richards** on Monday, June 20, 2011 at 2:09am.

The teacher collected the test papers of 20 students and found that their average mark was 15. Before she wrote the marks in her mark book, she lost 1 paper. Find the mark for the missing paper, she worked out the average mark for the 19 students was 14. What was the mark on the missing paper?

## Answer this Question

## Related Questions

- physics - A tank filled with water has marks every 10 cm on one wall. The ...
- maths - these marks were obtained by class of 28 students in a science test. the...
- math - A test consists of 120 questions. Each correct answer, each wrong answer ...
- math - Sammy got an average of 85% in four tests threethree of the scores were ...
- math - The difference between Sally’s PE mark and science mark is 12, and the ...
- statistics - The average marks of 30 students in mathematics is 69. If the class...
- Physics - A metre rule is found to balance at 51cm mark.When a body of 70g is ...
- introduction to computing - Write a C++ program that will accept the marks in a ...
- Physics - Another Question - "A meter stick is held vertically behind an object ...
- math - the average mark of 10 tests is 76%.If the average mark of the first 7 ...