exam Maths Puzzle Numerical Ability

x-8/x+5 / x-9/x+4 << considering the following

Explain why -5, 9, and -4 are not allowable replacements for the variable x.

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exam Other Question

A total of $1,120,000 is budgeted for constructing a road-way. The rule of thumb for this type of project is that the pavement costs twice the amount of the base material, and the 9(b-4)-7b=5(3b-2)