<em>Hope it helps and is useful :)</em>
The first one is correct, just match the numbers with the corresponding sides of each triangle
Solution:
<u>Note that:</u>
- Han's house = 450 m from school
- Lin's house = (450 - 135) from school
<u>Looking at the options, we can tell that the letter "z" represents Lin. </u>
- => z = (450 - 135)
- => z = 450 - 135
This option matches with Option D.
Option D is correct.
Looks confusing in the way you put it.
7.8 should be it, i am so sorry if its wrong hope it helps if its correct!
