Medals Please Help.

The triangles shown are similar.

What is the value of x?

http://static.k12.com/calms_media/media/1299500_1300000/1299525/1/a506825d97824929139025503c02ad0152987659/141091.jpg

A.
12

B.
10

C.
15

D.
9

Question

Medals Please Help.

The triangles shown are similar.
 
What is the value of x?

http://static.k12.com/calms_media/media/1299500_1300000/1299525/1/a506825d97824929139025503c02ad0152987659/141091.jpg

A.
12
 
 B.
10
 
 C.
15
 
 D.
9

ajanijones · Answer

I think Its B. 10

ajanijones · Answer

@thomaster

ajanijones · Answer

@MrNood @EclipsedStar @jagr2713

mrnood · Answer

similar triangles have the same 'proportions'

you can see that 2 sides have doubled in length - so the third side must also double to keep the triangles similar