10:24 or 10 to 24 you can use either one of these they mean the same thing
1/7 * 42/1
5 * 42 = 210
7 * 1 = 7
210/7 = 30
30
Think of a pie, if you cut it into 32 pieces the pieces would have to be small, and it you cut it into 23 pieces then the pieces would be bigger than the one cut I to 32 pieces. So 21/23 is bigger than 29/32