GRE Exam Numerical Ability Geometry

The lengths of two sides of an isosceles triangle are 15 and 22, respectively.What are the possible values of the perimeter?

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GRE Other Question

If 3 times Jane's age, in years, is equal to 8 times Beth's age, in years, and the difference between their ages is 15 years, how old are Jane and Beth? The lengths of two sides of an isosceles triangle are 15 and 22, respectively.What are the possible values of the perimeter?