Answer
Mali Republic : 223
Côte d’Ivoire: 225
Niger: 227
Work Step by Step
Let m = code for Mali Republic
Let c = code for Côte d’Ivoire
Let n = code for Niger
Since the codes are consecutive odd numbers:
c = m + 2
n = (m + 2) + 2 = m + 4
Since the sum is 675
m + c + n = 675
m + (m + 2) + (m + 4) = 675
3m + 6 = 675
3m = 669
m = 223
m = 223, c = 225, n = 227
