Respuesta :

farhanmahtab581

Answer:

Step-by-step explanation:

P varies jointly as q and r

 

p=k* q r

 

150 =k *(18)(5)

 

150 = k*(90)

 

150/90 = k

 

5/3 = k

 

find q when p=345 and r =9

 

p=k* q r

 

345 = (5/3) * q *9

 

345 = 45 q / 3

 

1035 = 45 q

 

q=23

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