Irina has two rectangular dive flags. The flags are similar and have dimensions, in inches, as shown in the figure below.

Two rectangular flags are shown. The bigger flag has length 3x - 9 and width 2x. The smaller flag has length 15 and width 13.

What is the value, in inches, of x?
Answer

13

11

3

8

Question

Irina has two rectangular dive flags. The flags are similar and have dimensions, in inches, as shown in the figure below.

Two rectangular flags are shown. The bigger flag has length 3x - 9 and width 2x. The smaller flag has length 15 and width 13.

What is the value, in inches, of x?
Answer
		
13
		
11
		
3
		
8

anonymous · Answer

3x - 9/ 15  =  2x/ 13  
->   13 ( 3x - 9 ) =  30x 
-->  39x - 30x = 117
=>    x = 117/ 9 = 13