Question

The two triangles are similar.

What is the value of x?
Enter your answer in the box.
X=

Answer 1

Explanation:

In similar triangles, the corresponding sides are in same proportion.

`\sf (4x)/(3x+1)=(15)/(12)`

Cross multiply,

4x*12 = 15*(3x + 1)

48x = 15*3x + 15*1

48x = 45x + 15

48x -45x = 15

3x = 15

x = 15/3

x = 5