The sum of sally and beth's age is 60. six years ago, sally was 3 times as old as beth. what are their present ages? beth’s age is 15 years, and sally’s age is 45 years. beth’s age is 18 years, and sally’s age is 42 years. beth’s age is 42 years, and sally’s age is 18 years. beth’s age is 45 years, and sally’s age is 15 years.