Respuesta :

3:5.....added = 8

3/8(24) = 72/8 = 9 <=
5/8(24) = 120/8 = 15 <=
3 + 5 is the whole so multiply the pieces by the whole:

3/8 * 24 = 9
5/8 * 24 = 15

Hope this helps!