exam Maths Puzzle Numerical Ability

what are two consecutive even integers that has a product 55 more than their sum?

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exam Other Question

I do not understand how to do this problem. It is 2x+3=8. I can not find the steps any were to figure out this problem. Can you show me the steps please? A solution of turpentine and alcohol contains 15 ounces of turpentine and 45 ounces of alcohol. How much pure turpentine must be added to produce a solution that is 75 percent turpentine?