Hi Guys,
I tried to solve this problem and even after I read the explanation, I still could not figure out how to solve the question with the info given in the question. I understand the math in the explanation, in fact its quite simple.
How would you guys dice up this question? I feel like the n+1 info is a red herring...or am I completely missing the point?
On a scale that measures the intesity of a certain phenomenon, a reading of n+1 corresponds to an intensity that is 10 times the intensity corresponding to a reading of n. On that scale, the intensity corresponding to a reading of 8 is how many times as great as the intensity corresponding to a reading of 3?
OG11 #99- Red Herring?
This topic has expert replies
-
- Junior | Next Rank: 30 Posts
- Posts: 21
- Joined: Thu May 15, 2008 12:51 am
- Thanked: 1 times
reading at 8 is 10 times reading at 7. Reading at 7 is 10 times reading at 6 i.e. reading at 8 is 10^2 times reading at 6. Similarly if u solve further, u will figure out that reading at 8 is 10^5 times reading at 3.
The n+1 info is just to tell you that its the next corresponding reading on the scale. Without the n+1 info you wouldn't know what 10 times the intensity corresponds to and you would then have insufficient data to solve the problem.
Hope this makes sense to you now
Hope this makes sense to you now
-
- Senior | Next Rank: 100 Posts
- Posts: 73
- Joined: Thu Aug 07, 2008 7:33 pm
- Thanked: 7 times
- Followed by:1 members
Assume the following,
intensity at reading n = x
therefore intensity at reading (n+1)=10x
n intensity
3 x
4 10x
5 100x, which is 10 times the intensity at n=4
6 1000x , which is 10 times the intensity at n=5
7 10000x , which is 10 times the intensity at n=6
8 100000x , which is 10 times the intensity at n=7
thus intensity at n=8 is 10^5 times the intensity at n=3.
Hope this helps.
intensity at reading n = x
therefore intensity at reading (n+1)=10x
n intensity
3 x
4 10x
5 100x, which is 10 times the intensity at n=4
6 1000x , which is 10 times the intensity at n=5
7 10000x , which is 10 times the intensity at n=6
8 100000x , which is 10 times the intensity at n=7
thus intensity at n=8 is 10^5 times the intensity at n=3.
Hope this helps.