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2 years ago

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

Mathematics

1 answer:

r-ruslan [8.4K]2 years ago

3 0

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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