Answer:
605
Step-by-step explanation:
A
x = 10
∵ Both angle ∠A and are corresponding angles.
∠A = ∠B
9x - 40 = 3x + 20
9x = 3x + 20 + 40
9x - 3x = 20 + 40
6x = 60
x = 60/6
∴ x = [10]
25 percent
cuz am smart