Soil sells for 8 1/4 cents per pound. how much would you save if you bought a 100 pound sack for $7.45?

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Solve for x and y a x= 13.3 y= 16.7 b x= 23.3 y= 12.5 c x= 7.5 y= 16.7 d x=7.5 y= 12.5