To determine the volume of water left in the graduated cylinder on the right after removing the red 30 mL marble, you will need to subtract the volume of the marble from the total volume of water in the cylinder.The original total volume of water in the graduated cylinder on the right can be found by adding up the volumes of the three marbles: 30 mL + 20 mL + 40 mL = 90 mL.Since we are removing the 30 mL marble, we subtract its volume from the total volume:90 mL - 30 mL = 60 mL.Therefore, the volume of water left in the graduated cylinder on the right would be 60 mL.
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