Respuesta :
The constant of variation given that r varies directly with p and inversely with the product of s and t is one-half
From the question given above,
r ∝ p ∝ 1/st
r ∝ p / st
r = Kp / st
Cross multiply
r × st = Kp
Divide both side by p
K = rst / p => constant of variation
How to determine the constant of variation
- p = 12
- t = 2
- s = one-sixth = 1/6
- r = 18
- Constant of variation (K) =?
K = rst / p
K = (18 × 1/6 × 2) / 12
K = 6 / 12
K = 1 / 2 = one-half
Learn more about variation:
https://brainly.com/question/14254277