What is 5/8 plus blank = 1/6

Find the smallest number by which the given number should be divided to make a perfect cube(with steps or the answer will get reported) a.108 b.2187

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?