Please help!!

Monkeymath5 said:
If your current grade in the class is 92% and your average grade on labs is 10 points, what will your new current grade be if you just had a lab where you received a grade of 10 points? (Labs are worth 15% of the final grade)
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Maybe I'm misinterpreting the problem, but as I read it, the current overall grade (not just on exams) is 92%, and although we don't know how many labs there are, or how points translate into percentages, and so on, we know that the lab grade didn't change -- therefore the overall grade likewise didn't change, so the answer is 92%. That would be true even if we took "current grade" to be the average of exams, since that, too, hasn't changed!

Yes, it's a poorly stated problem (which is why my initial impression was that it was unsolvable), and if I'm interpreting it right (which is hard to be sure of), it is a trick problem.

It looks to me more like a direct copy of the problem than a summary, but I could be wrong about that, too.
 
JeffM said:
This is why the guidelines ask for a complete and exact statement of the problem. A high percentage of the time students cannot solve the problem because they do not fully understand the problem. Consequently their summary of the problem is flawed.
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Yes this is true the students gets 10/10 on each lab which is 100 % on the labs sections. Would I just do 15% of 100 and then add that to the final percent?
 
Monkeymath5 said:
Yes this is true the students gets 10/10 on each lab which is 100 % on the labs sections. Would I just do 15% of 100 and then add that to the final percent?
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Are you saying that this is a real-life question, not an assignment you are quoting to us, and you know more than you initially stated?

If it is your own words, then you can answer my question: When you say "your current grade in the class is 92%", does that mean your current overall average, or your average apart from labs? And when you ask for "your new current grade", is that also your overall average?
 
This is a question that has been assigned to me as a homework question. The 92% in the current avaege with an average of 10 points in labs so the labs section is 100%. The question wants me to tell them what would the new average be if I just received another 10 points so 100% on a new lab?
I know that my average was a 92% with 100 percent on the lab section which is worth 15% of the final average. I jus need to know what my average is now with another 100% on the lab.
 
If you aren't sure, you could work out what the current average of tests is (that is, the 85%), and then use that to find the new overall average, using the method you used earlier.

But you'll find that feels like a waste of time when you're done (though it may be good exercise for you).
 
You have a 100% on your lab before the last lab. After the last lab, your lab average is still 100%. So in your final average you will include 100% of 15, which is 15, whether you had this last lab or not. Now for the non-lab part of this course you had some average and to the 15 points from the lab, you need to add 85% of the non-lab grade. Since the non-lab grade did not change whether you had this last lab or not, then your average would still be 92%.
Dr Peterson definitely interrupted this problem correctly. You really should have said that the 10 points on the lab represented a score of 100%!
 
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