A fisherman's day is rated as good if he catches 9 fishes, fair if he catches 7 fishes and poor if he catches 5 fishes. The fisherman catches 53 fishes in a week that includes good, fair and poor days. How many good, fair and poor days the fisherman had during the week?

• Good=9 fish on a days
  Fair =7 fish on b days
  Poor=5 fish on c days
  
  9a+7b+5c=53
  
  a+b+c=7
  
  a=3, b=3, c=1
• 14 years agoHelpfull: Yes(6) No(0)
• 4 good, 1 fair and 2 poor days the fisherman had during the week.
• 14 years agoHelpfull: Yes(3) No(0)
• 4 good days -> 4*9 = 36
  1 fair day -> 1*7 = 7
  2 poor days -> 2*5 = 10
  Total in 7 days = 53
• 14 years agoHelpfull: Yes(1) No(1)