exam Maths Puzzle Numerical Ability

A reduced fat cookie contains 5 grams fat per serving. In order for food to be 'reduced fat', it must have at least 15% less fat than the regular item. What can you conclude abou

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THis is the best I can type it out. I hope you understand it. 6x to the second power y to the third power + 9x to the second power y to the third power. divided by 3x to the second power y by the second power. Simplify it. It looks sort of like this. solve -2x/sqrt(x+1)+4sqrt(x+1)