book Maths Puzzle Numerical Ability

3[2+v]-4v=v+16

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book Other Question

If 48 square inches are subtracted from the area of a square table, the result would be equal to twice the perimeter. What is the length of the side of the table?
______ feet long
5(x+5)=25+5x

a) -5 b) 0 c) all real numbers d) no solution