78. 100 students appeared for an examination. The rosults of those who failed e given below: Marks No. of Students : If the average marks of all students were 68.6, find out average marks of those who 10 15 20 25 30 Total 2 30 8 7. 3 Dassed.

What is MPRQ? P. R. 77 5. Q 28

Find the mean for the list of numbers. Ages of patients (in years ) in a clinic: 15, 4, 22, 15 Round answer to the nearest whole number if necessary.

There are 9 girls and 12 boys in the classroom. What percentage of the classroom are girls? A. 75%B. 133%C. 42.8%

The pie chart below shows percentages of grades of 700 students. A. 23% B.  27% C.33% D. 17%How many students have a grade of A?

50 part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below: # of Courses Frequency Relative Frequency Cumulative Frequency 1 24 0.48   2 15     3       a.  Complete the table.b.  What percent of students take exactly one course? %

There are twelve sheep in the field.Eduardo noticed that there are more goats in the field than there are sheep.Which of the following is a possible ratio of sheep to goats?A. 12/5 B. 12/12 C. 17/12 D.12/17