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Question

The expression 16x+11 represents the perimeter of a quadrilateral. The lengths of the three sides are 2x+3,3x+4, and 5x1 respectively. Calculate the length of the fourth side.

A
6x5
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B
6x+5
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C
5x6
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D
10x+6
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Solution

The correct option is B 6x+5
Perimeter of the quadrilateral =16x+11
Total length of the three sides =(2x+3)+(3x+4)+(5x1)=2x+3x+5x+3+41=10x+6
Length of the fourth side = Perimeter of the quadrilateral – Sum of the lengths of the three sides
(16x+11)(10x+6)=16x10x+116=6x+5

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