exam Maths Puzzle Numerical Ability

Please help me solve this equation: a playground is 25m x 40m. it is surrounded by a paved skating path of uniform width. the combined area of the playground and path is 1,426 square meters. how wide is the path?

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exam Other Question
Evaluate each expression when x=1, y=3, and z=5.
1. 3y 2.z/5x 3. (2x+3y) 4. xy+z 1.a/(b+c) +b/(c+a) +c/(a+b) >=3/2.[hint:Apply the specified inequality to the sets of numbers b+c,c+a,a+b;1/(b+c),1/?(c+a),1/(a+b)]