SOLUTION: if k is a positive integer,what is the least value of k for which sqrt (5k/3) is an integer? A 3 b 5 c 15 d 25 e 60

Question 304107: if k is a positive integer,what is the least value of k for which sqrt (5k/3) is an integer?
A 3 b 5 c 15 d 25 e 60
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
In order for to be an integer, must be divisible by
I'll create a new variable and I have
which must be an integer, so must be a perfect square.
gives me the smallest square

The answer is c
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