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?

Algebra ->  Customizable Word Problem Solvers  -> Misc -> 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?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

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) About Me  (Show Source):
You can put this solution on YOUR website!
b, Blues count
p, purples count
k, variation constant

b=k%2Fp%5E3
You figure out the rest.

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
B= blues
p=purples
B%28alpha%291%2Fp%5E3
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