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A scientist has a bottle that is 5/6 full of solution. He

uses 2/5 of the solution in the bottle for an
experiment. How much of a full bottle of solution
does he use?

1 Answer

4 votes

Final answer:

The scientist uses 13/30 of a full bottle of solution for the experiment.

Step-by-step explanation:

To find out how much of a full bottle of solution the scientist uses, we need to subtract the amount used from the original amount in the bottle. The bottle is currently 5/6 full, so we can represent this as a fraction: 5/6. The scientist uses 2/5 of the solution, so we can represent this as another fraction: 2/5. To find out how much of a full bottle the scientist uses, we need to subtract 2/5 from 5/6 using fraction subtraction.

Step 1: Find a common denominator for the fractions. The least common multiple of 6 and 5 is 30, so we can rewrite the fractions as 25/30 and 12/30.

Step 2: Subtract the fractions. 25/30 - 12/30 = 13/30.

Therefore, the scientist uses 13/30 of a full bottle of solution for the experiment.

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