exam Maths Puzzle Numerical Ability

How many ounces of pure gold must be added to five ounces of something that is 1 percent gold in order that the mixture is 6 percent gold?

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Evaluate teh function for the values of x given 1, 2, 4, 8, & 16. Describe the differences in the rate at which each function c Write log b 81 = 2 in exponential form.