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42IM0
Say you have $100 dollars, 6/10 of $100 would be $60 dollars and 2/5 of 100 would be $40 dollars.
6/10 is .60 and 2/5 is .40 because you can multiply 6/10 by 10 to make it out of 100 and multiply 2/5 by 20 to make it 100 also