Answer:
To find the highest multiple of 6 and 4 between 30 and 50, we need to find the largest number that is divisible by both 6 and 4 within that range.
The multiples of 6 are: 30, 36, 42, 48.
The multiples of 4 are: 32, 36, 40, 44, 48.
The common multiples are: 36 and 48.
Therefore, the highest multiple of 6 and 4 between 30 and 50 is 48.