SAT Math Practice Question #10613 - SATify | SATify

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SAT Math Practice Question #10613 - SATify | SATify

#10613

equations

word problem

perimeter

medium

120 sec

In triangle $A BC$ , sides $A B$ and $A C$ each have a length of $a$ centimeters and side $BC$ has a length of $b$ centimeters. The given equation $2 a + b = 55$ represents this situation. Which of the following is the best interpretation of 55 in this context?

A.

The length, in centimeters, of side $A B$ .

B.

The sum of the lengths, in centimeters, of sides $A B$ and $BC$ .

C.

The difference, in centimeters, between the lengths of sides $A B$ and $A C$ .

D.

The sum of the lengths, in centimeters, of the three sides of the triangle.