SOLUTION: Two sides of a triangle are 7 and 8. What is the smallest possible perimeter of the triangle, if the length of the third side is a whole number? A)18 B)17 C)16 D)15

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Two sides of a triangle are 7 and 8. What is the smallest possible perimeter of the triangle, if the length of the third side is a whole number? A)18 B)17 C)16 D)15      Log On

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Question 1144079: Two sides of a triangle are 7 and 8. What is the smallest possible perimeter of the triangle, if the length of the third side is a whole number?
A)18
B)17
C)16
D)15

Answer by math_helper(2461) About Me  (Show Source):
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B) 17
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The sum of any two sides must be (strictly) greater than the length of the third side, so the smallest unknown side is 2, and 7+8+2=17.