Let A, K and C represent the messages sent by Amanda, Kareem and Chang respectively.
We also know that:
Kareem sent 3 times as many messages as Chang, therefore, K = 3C
Amanda sent 8 more messages than Chang we then have: A = 8 + C
In all, A + K + C = 88. Therefore, we have:
We will collect like terms to get:
Therefore,
Amanda will have sent 8 + 16 = 24 messages
Kareem will have sent 3(16) = 48 messages
Chang will have sent 16 messages