Question

The triangles are similar. What is the value of x?

Answer 1

Given that the two triangles are similar:
$\frac{7}{28}$ =  $\frac{25}{6x + 28}$
$\frac{1}{4}$ = $\frac{25}{6x + 28}$
6x + 28 = 4 x 25
6x + 28 = 100
6x = 100 - 28
6x = 72
x = 12

Answer 2

X=12 and the number that makes the triangle larger is 4