Hi all,

I'm new to this forum so please pardon if I make any forum etiquette mistakes. I've been struggling with this problem for an hour now and I just can't get the correct answer:

The average height of the two forwards and center of a basektball team is 6 feet and 8 inches. What must the average height of the two guards be so that the team average is at least 6 feet and 4 inches.

Can someone help me set this up? Thanks in advance.