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If varies jointly as and and 24 when 4 and 3 wh... - JSS3 Mathematics Variations Question

If 𝑧 varies jointly as 𝑥 and 𝑦, and 𝑧=24 when 𝑥=4 and 𝑦=3, what is 𝑧 when 𝑥=6 and 𝑦=5?

A

60

B

30

C

36

D

45

correct option: c
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