Blue Book Math Question Help (Pg 840, # 7)

Kash_Money
Thu, 15 Jan 2009 13:32:54 +0000

Having trouble figuring out how to solve this one. I’d appreciate it if anyone could explain how they solved it. I looked at the solution on the College Board Official SAT Online course, but it was absolutely no help.

7) If y is inversely proportional to x and y = 15 when x = 5, what is the value of y when x = 25?

(a) 1/5
(b) 1/3
(c) 3
(d) 5
(e) 75