Kait, hong, and aldo sent a total of 114 text messages during the weekend. kait sent 6 fewer messages than aldo. hong sent 4 times as many messages as aldo. how many messages did they each send?

Let x be a number of messages that Aldo sent: x
Kait sent 6 fewer messages than Also: x - 6
Hong sent 4 times as many messages as Aldo: 4x
total of 114 text messages
x + x-6 + 4x = 114
6x - 6 = 114
6x = 120
x = 20
Aldo sent 20 messages, 20 - 6 = 14 messages that Kait sent, and 4*20 = 80 messages that Hong sent. 

The surface area would be 576 because you multiply all the numbers then multiply that number by 6