Each of the families on the block had a dog. If they bought dog food in different size bags and brands, what is the greatest amount of food they could get for their dog if they had $20.00?
Prices:
Science diet- 7 lbs for $8.62
Purina- 6 lbs for $7.99
Eukanuba- 10 lbs for $16.54
Alpo- 9 lbs for