def sb_and_ps (sb_years, ps_years, sb_ps):
    print "i'm %d years old!" % sb_years
    print "She is %d years old!" % ps_years
    print "we are together!"
    print "together we are %d years old! \n " % sb_ps
    
sb_and_ps(28,22,50)


amount_sb = 28
amount_ps = 22
amount_sbps = 50
sb_and_ps(amount_sb, amount_ps, amount_sbps)


sb_and_ps(10 + 18, 10 + 12, 10 + 40)

sb_and_ps(amount_sb + 11, amount_ps + 11, amount_sbps + 12)