First you have to find the area of the garden, which you would do 5*12=60, then you would have to find out how many bags he would need, so if one bag of fertilizer can cover 6 yards squared and you need to know how much fertilizer would take up 60 yard, you would do 60/6 which is 10. So Charles needs 10 bags of fertilizer to cover the entire garden. I hoped that helped!
