Question

please answer this question.
its 5th one.
figure is beside it.
please answer correctly as I am having exam..

Answer 1

2x = 5y........[alternate interior angles ]
...x = 5/2y.......(1)
x-y = 30..........[corresponding angles]
substituting (1)...
5/2y -y=30
3/2y = 30
y = 20..
therefore...x -20=30
x = 50.. :-)