Answer:
80
Step-by-step explanation:
20 percent is 16 questions
then 100/20=5
5 times 16 is 80
I don't quite understand the question but from what it's given us so far, I can only assume that it is asking which axis the both of them measured?
Vivian measured the X-Axis, as it said she measured it as 6 units long.
Brook only stated that the distance on the line is 4 units, so I can only assume that she measured the Y-Axis.
I don't know if this helped but if so please give brainliest :D