Easy I guess .. I ll try to help .. Here we go .. The cards you have is N The cards he has is n <span>you have 3 times the number of cards he has This means N=3n </span><span> you only have 80 more football cards then he does This means N=n+80 But we already know that N=3n So 3n=n+80 which is 2n=80 n=40 So your friend has only 40 cards and you have 3*40= 120 cards
