IGCSE Maths HELP!

[KyleoAhsan]

Hey guys any idea how to solve this question below! Help is appreciated !

P and Q are positive quantities, P is inversely proportional to Q² . when P = 160 Q = 20. Find the value of P when P = Q​

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[celoth]

P=k/Q^2

160=k/20^2
k=64000

P=64000/P^2
P^3=64000
P=40

 

[KyleoAhsan]

Thanks a lot !
By the way Kudos for you...you have just solved a A* level question !