The sum of five numbers A, B, C, D and E is 37.5. The average of A and B is 6, and the average of D and E is 9. The average of A, B and C is:
A7.5
B6
C6.5
D5.5
Answer:
C. 6.5
Read Explanation:
(A + B + C + D + E) = 37.5
(A + B) ÷ 2 = 6
= A + B = 12
(D + E) ÷ 2 = 9
= D + E = 18
(12 + C + 18) = 37.5
C = 7.5
Average of A,B and C = (12 + 7.5)/ 3 = 6.5