exam Maths Puzzle Numerical Ability

log(x+2) - log(2x+1)= logx

I am not sure what to do with the (-) and how it effects the rest of the problem.

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exam Other Question

From Table 21.5, you can determine the rate of inflation from one year to the next. For example, you find the rate of inflation from one 1991 to 1992 by subtracting the two index A rectangular shape has a length-to-width ratio of approximately 5 to 3. A designer can use the expression 1/3(5w)to find th length of such a rectangle with a given width w. Find the length of such a rectangle with width 6 inches.