The teacher has finished grading the Maths papers at West High School. The class size is under 30. One-third of the class got a B, one fourth got a B- and one-sixth got a C. One-eighth of the class flunked and the remainder of the class received an A.
How many students in the class received an A?
Answer
Find a common deno-minator for 3, 4, 6 and 8. The only common deno-minator smaller than 30 is 24. Therefore, the class size was 24 and the grades were:
B: 8
B-: 6
C: 4
D/F: 3
The number of students who received an A was 3 (24—21).
