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Problema Solution

P varies jointly as Q and R. If P = 72 when Q = 18 and R = 2, find P when Q = 36 and R = 1

Answer provided by our tutors

WE HAVE  P = k QR 

 

SO k  =    72 /  18* 2 =    2 

 

SO   P  =  2 * 36*1  =  72


 

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