Asked by Anonymous

the number of red marbles varies inversely as the square of the number of blue marbles. when there were four reds, there were 20 blues. How many reds would there be if there were only four blues?

Answers

Answered by wade
100
Answered by Reiny
r = k/b^2 , r is red, b is blue

4 = k/400
k = 1600
then r = 1600/b^2

when b = 4
r = 1600/16
= 100
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