Can someone solve numbers 3 and 4, and show your work plz

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll