Mathematics, 14.04.2021 20:10, majakvcvc77

If y varies jointly as 'x' and 'z', and 'y = 20 when 'x = 15' and 'Z = 6' , find 'y' when 'x = 12' and 'z = 8.

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If y varies jointly as 'x' and 'z', and 'y = 20 when 'x = 15' and 'Z = 6' , find 'y' when 'x = 12' a...