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Annette [7]
3 years ago
7

P varies directly as q. When q=31.2,p=20.8. Find p when q=15.3.

Mathematics
1 answer:
kari74 [83]3 years ago
3 0

Answer:

a)   p = 10.20

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that   p varies directly as q

               p ∝ q

       ⇒    p = k q

where 'K' is proportionally constant

given p =20.8 and q = 31.2

            p = k q

       ⇒ 20.8 = k (31.2)

           k = \frac{20.8}{31.2}

          k = 0.666

<u><em>Step(ii):-</em></u>

   p = k q

Given that  q = 15.3 and k = 0.666

  p = 0.666 ×15.3 = 10.20

 

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