Answer:
x = 20
Step-by-step explanation:
The ratios of corresponding sides are equal, that is
[tex]\frac{ED}{EG}[/tex] = [tex]\frac{EC}{EF}[/tex] , substitute values
[tex]\frac{36}{20}[/tex] = [tex]\frac{25+x}{25}[/tex] ( cross- multiply )
20(25 + x) = 900 ( divide both sides by 20 )
25 + x = 45 ( subtract 25 from both sides )
x = 20
