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18-06-2020
Mathematics

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Q is directly proportional to r.
Q is 76 when r is 20.
Work out q when r is 45

Respuesta :

Ejiro180 Ejiro180

18-06-2020

Answer:

171

Step-by-step explanation:

Q~r

find k (k is the constant)

Q=kr

76=k×20

76=20k divide 20 on both sides giving you

k=3.8

then Q=k×r

Q=3.8×45

Q=171

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