Andrea L. answered 10/11/15
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Katie, Let x=Priscilla's age and Let x+19=Jack's age. Their ages together =167 years. Set equation: x+x+19=167, 2x+19=167, subtract 19 from both sides, 2x=148, divide both sides by 2, x=74, so 74 is Priscilla's age, and 74+19=93 is Jack's age.