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alay64

Answer:

Part A: 480 ounces of water are left in the water tank.

Part B: he will drink 3 tanks of water in 30 days.

Step-by-step explanation:

Part A:

5x8x16 = 6x16 = 1/2x8x16

=640 = 96 = 64

=480

Part B:

4x30 divided by (5x8) = 120 divided by 40 = 3