The value of “A” varies in inverse proportion as the square of “B”. If the value of “A” is equal to 40 when “B” is equal to 12. What would be the value of “A” when “B” is equal to 24 ?  Choose the correct choice:
A) 10  B) 15  C) 20  D) 22  E) None of these
Explanation:   We have, A α 1/B2   A * B2 = K (constant)   When B = 12, A = 40 …..Given   K = 40 * (12)2 = 5760   Now, B = 24. Hence, 10 = 5760 / 576= 
<gadget id="calculator">5760 / 576</gadget>
<output>10</output>
10   10NSWER: 10
<result>A</result>
The value of “A” varies in inverse proportion as the square of “B”. If the value of “A” is equal to 40 when “B” is equal to 12. What would be the value of “A” when “B” is equal to 24 ?