what is the value of k?
1/5 < 1/k-1 < 1/2
Can you please help me on how I can find the value of k.
1/5 < 1/k-1 < 1/2
Can you please help me on how I can find the value of k.
If 1/something is greater than 1/5 and less than 1/2 what are some values for something?If k is an integer, what is the value of k?
1/5 < 1/(k-1) < 1/2
Well, we know that 1/5 < 1/4 < 1/2, and we know that 1/5 < 1/3 < 1/2
Since something is an integer, it looks like 3 and 4 are the only possible values of something.
Since we're using something as a placeholder for (k - 1), we can conclude that:
(k - 1) = 3 or (k - 1) = 4
Solve to get: k = 4 or k = 5
Aside: I call the above technique the "Something Method." If anyone is interested, we have a free video on this topic: https://www.gmatprepnow.com/module/gmat- ... ing?id=988
Cheers,
Brent
