The average of four test marks was 60. The first three marks were 30,55 and 65. What was the fourth mark?
Answer Choices
A. 40
B. 55
C. 60
D. 70
E. 90
The average of four test marks was 60. The first three marks were 30,55 and 65. What was the fourth mark?
Answer Choices
A. 40
B. 55
C. 60
D. 70
E. 90