Question

Emma is going to seed grass in her front yard. The yard is 45 feet long by 27 feet wide. Her options at the seed store are: 1 bag of 4 lb of seeds costs $5 and covers 500 square feet of area 1 bag of 2 lb of seeds costs $2 and covers 170 square feet of area If the lawn requires one layer of seeds, what is the minimum cost of seeding the grass in Emma's lawn?

Answer 1

So the total square footage that you need to cover is 1215 ft. The most cost effective way to do that is to use 2 - 4lb bags (to cover 1000 ft) at the cost of $10 and 2 - 2lb bags (to cover 340ft [a little more than you need]) at the cost of $4 to get a grand total of $14.