SOLUTION: Blues vary inversely as purples cubed. When there are 250 blues, there are 2 purples. How many blues are present when there are 5 purples?

Question 1202574: Blues vary inversely as purples cubed. When there are 250 blues, there are 2 purples. How many blues are present when there are 5 purples?
Found 2 solutions by josgarithmetic, mananth:
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
b, Blues count
p, purples count
k, variation constant

You figure out the rest.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
B= blues
p=purples

B = k * 1/p^3
250 =K* 1/2^3
k = 250*8=1000
Now
B = 250*8*(1/5^3)
B = 250*8/125
B=16

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