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?
Your weight on the moon is relative to your weight on earth. neil armstrong weighed 360 lbs. in his moon gear while on the earth, but on the moon he only weighed 60 lbs. how much would a 150 lb person weigh on the moon?