Answer: 0.46
Explanation
CD is 16 units long since 67-51 = 16.
AB is 35 units long since 77-42 = 35.
Divide the segment lengths to find the probability your teacher is asking for:
CD/AB = 16/35 = 0.45714 approximately
This rounds to 0.46 when rounding to the nearest hundredth (aka 2 decimal places).
There's roughly a 46% chance of this random point landing on CD.
