If there were 20 students each in Class A and Class C, and 30 students each in Class B and Class D, how many students participated in the May fund-raiser?
A. 71
B. 72
C. 74
D. 76
Answer:C
If there were 20 students each in Class A and Class C, and 30 students each in Class B and Class D, how many students participated in the May fund-raiser?
A. 71 B. 72 C. 74 D. 76
Explanation: C