Question

Solve for x in the diagram below.

Answer 1

x = 9

Explanation:

The parallel lines divide the sides of the triangle in proportion, that is

`(20-8)/(x)` =
`(8)/(6)`

`(12)/(x)` =
`(8)/(6)` ( cross- multiply )

8x = 72 ( divide both sides by 8 )

x = 9