exam Maths Puzzle Numerical Ability

pLEASE HELP me solve this problem. subtract and simplify:3x/x^2-36-2/5x+30

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exam Other Question

john takes 3hours longer than andrew to peel 400 pounds of apples. if together they can peel 400pounds of apples in 8hours then how long would it take john if he is working alone. round answer to three decimal places -25 divided by 6 + 4 1/5