BCA Problem Set 07
- 40 questions
- 60 minutes.
- 1 point per correct answer (40 max.)
- 0.25 point deduction for incorrect answers and 0 points for no answer.
- Diagrams other than graphs are not necessarily drawn to scale.
- Assume that a diagram is in one plane unless the problem specifically states that it is not.
- Graphs are drawn to scale and you can assume relationships according to appearance e.g. parallel lines.
- Pagination: You may move freely among questions and submit the quiz at any point.
- Skipped questions show in red/answered questions green/unread questions white.
©2017-2018 BCATestPrep.com. All Rights Reserved.
This Post Has 4 Comments
Leave a Reply
You must be logged in to post a comment.
This site uses Akismet to reduce spam. Learn how your comment data is processed.
What does percent of impurities mean?
I don’t understand the explanation. Can you make a video or make it more detailed?
For Problem Set 7 Question 39 ^
Yes, we can make a video. In the meantime, I will try to provide my own explanation in the hope that it will help.
The square in black is 1cm x 1cm. It’s area = S^2 = 1^2 = 1. The ant is always 1cm outside of this which is the black path — larger square — shown above. This square path is 3cm x 3cm. It’s area = S^2 = 3^2 = 9 sq cm. When something is “bounded” in math it ranges from high to low or, in this case, from the inner boundary to the out boundary. As a result, the answer is not simply 9 sq cm. In order to account for the black square inner boundary, the area of the black square must be subtracted to calculate the bounded area between the black square and the outer path. This is a typical approach to shaded area problems which are analogous to this problem; Shaded area = Outer Shape area – Inner Shape area.